T-Mobile USA, Inc., a Delaware corporation (“T-Mobile USA” or the “Issuer”) and a direct wholly-owned subsidiary of T-Mobile US, Inc. (“T-Mobile US” or “Parent”), hereby offers to exchange, upon the terms and conditions set forth in this prospectus and the accompanying letter of transmittal, up to $800,000,000 in aggregate principal amount of its 2.250% Senior Notes due 2026 (the “2026 Exchange Notes”), $1,100,000,000 in aggregate principal amount of its 3.375% Senior Notes due 2029 (the “2029 Exchange Notes”), and $1,100,000,000 in aggregate principal amount of its 3.500% Senior Notes due 2031 (the “2031 Exchange Notes” and, together with the 2026 Exchange Notes and the 2029 Exchange Notes, the “Exchange Notes”) for an equal amount of its outstanding 2.250% Senior Notes due 2026 (the “2026 Original Notes”), 3.375% Senior Notes due 2029 (the “2029 Original Notes”) and 3.500% Senior Notes due 2031 (the “2031 Original Notes” and together with the 2026 Original Notes and the 2029 Original Notes, the “Original Notes”). We refer to the Original Notes and the Exchange Notes, collectively, as the “Notes.”

The Issuer’s obligations under the Original Notes are, and under the Exchange Notes will be, guaranteed (such guarantees, the “Guarantees”) by (x) T-Mobile US and each wholly-owned subsidiary of the Issuer that is not an Excluded Subsidiary (as defined herein) and either (i) is or becomes an obligor of the Credit Agreement (as defined herein) or (ii) issues or guarantees certain capital markets debt securities, and (y) any future direct or indirect subsidiary of T-Mobile US or any subsidiary thereof that owns capital stock of the Issuer.

The Original Notes and the Guarantees thereof are, and the Exchange Notes and the Guarantees thereof will be: the Issuer’s and the guarantors’ unsubordinated unsecured obligations; senior in right of payment to any future indebtedness of the Issuer or any guarantor to the extent that such future indebtedness provides by its terms that it is subordinated in right of payment to the Notes and the Guarantees; equal in right of payment with any of the Issuer’s and the guarantors’ existing and future indebtedness and other liabilities that are not by their terms subordinated in right of payment to the Notes, including, without limitation, obligations under the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes, the Existing Sprint Unsecured Notes, the Credit Agreement and the Tower Obligations (each as defined herein); effectively subordinated to all existing and future secured indebtedness of the Issuer or any guarantor, including, without limitation, obligations under the Outstanding T-Mobile Secured Notes and the Credit Agreement, in each case to the extent of the value of the assets securing such indebtedness; and structurally subordinated to all of the liabilities and other obligations of the subsidiaries of T-Mobile US that are not obligors with respect to the Notes, including the Existing Sprint Spectrum-Backed Notes (as defined herein), factoring arrangements and tower obligations.

The terms of the Exchange Notes are substantially identical to the terms of the Original Notes, except that the Exchange Notes will generally be freely transferable and do not contain certain terms with respect to registration rights and additional interest. The Exchange Notes will be issued under the indentures governing the Original Notes. For a description of the principal terms of the Exchange Notes, see “Description of Notes.”

The 2026 Original Notes were an additional issuance of the 2.250% Senior Notes due 2026 issued by the Issuer in an aggregate principal amount of $1,000,000,000 on January 14, 2021 in an offering registered under the Securities Act (the “Existing Registered 2026 Notes”). The 2029 Original Notes were an additional issuance of the 3.375% Senior Notes due 2029 issued by the Issuer in an aggregate principal amount of $1,250,000,000 on March 23, 2021 in an offering registered under the Securities Act (the “Existing Registered 2029 Notes”). The 2031 Original Notes were an additional issuance of the 3.500% Senior Notes due 2031 issued by the Issuer in an aggregate principal amount of $1,350,000,000 on March 23, 2021 in an offering registered under the Securities Act (the “Existing Registered 2031 Notes” and collectively with the Existing Registered 2026 Notes and the Existing Registered 2029 Notes, the “Existing Notes”). The 2026 Original Notes, the 2029 Original Notes and the 2031 Original Notes are consolidated with and form a single series with the Existing Registered 2026 Notes, the Existing Registered 2029 Notes and the Existing Registered 2031 Notes, respectively, and have the same respective terms other than the settlement date, offering price, initial interest payment date and registration rights; however, unless and until exchanged for the applicable series of Exchange Notes pursuant to this exchange offer, the Original Notes will have separate CUSIP numbers from, and will not be fungible with, the applicable series of Existing Notes.

The exchange offer will expire at 5:00 p.m., New York City time, on June 22, 2022, unless we extend the offer. At any time prior to the expiration time, you may withdraw your tender of any Original Notes; otherwise, such tender is irrevocable. We will receive no cash proceeds from the exchange offer.

Any Original Notes not tendered and accepted in the exchange offer will remain outstanding. To the extent Original Notes are tendered and accepted in the exchange offer, your ability to sell untendered, and tendered but unaccepted, Original Notes could be adversely affected. Following consummation of the exchange offer, the Original Notes will continue to be subject to their existing transfer restrictions and we will generally have no further obligations to provide for the registration of the Original Notes under the Securities Act. We cannot guarantee that an active trading market will develop or give assurances as to the liquidity of the trading market for either the Original Notes or the Exchange Notes. We do not intend to apply for listing of either the Original Notes or the Exchange Notes on any exchange or market.

Each broker-dealer that receives Exchange Notes for its own account pursuant to the exchange offer must acknowledge that it will deliver a prospectus meeting the requirements of the Securities Act (or, to the extent permitted by law, make available a prospectus meeting the requirements of the Securities Act to purchasers) in connection with any resale of such Exchange Notes. The letter of transmittal states that by so acknowledging and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an “underwriter” within the meaning of the Securities Act. This prospectus, as it may be amended or supplemented from time to time, may be used by a broker-dealer in connection with resales of the Exchange Notes received in exchange for the Original Notes where such Original Notes were acquired by such broker-dealer as a result of market-making or other trading activities. We have agreed that, for a period of 90 days following the expiration time of the exchange offer, we will make this prospectus available to any broker-dealer for use in connection with any such resale. See “Plan of Distribution.”

Investing in the Exchange Notes involves certain risks. Please read “Risk Factors” beginning on page 13 of this prospectus.

This prospectus and the letter of transmittal are first being delivered to all holders of the Original Notes on or about May 23, 2022.

Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

This prospectus incorporates important business and financial information about us that is not included in or delivered with this prospectus. Documents incorporated by reference are available from us without charge upon written or oral request. Any person, including any beneficial owner, to whom this prospectus is delivered may obtain documents incorporated by reference in, but not delivered with, this prospectus by requesting them by telephone or in writing at the following address:

To obtain timely delivery, you must request these documents no later than five business days before the expiration time of the exchange offer, or June 14, 2022.

You should rely only on the information incorporated by reference or provided in this prospectus. We have not authorized anyone else to provide you with information different from that contained in this prospectus. We are offering to exchange Original Notes for Exchange Notes only in jurisdictions where such offer is permitted. You should not assume that the information in the incorporated documents or this prospectus is accurate as of any other date other than the date on the front of these documents.

Unless stated otherwise or the context indicates otherwise, references to “T-Mobile,” the “Company,” “our Company,” “we,” “our,” “ours” and “us” refer to T-Mobile US, Inc. together with its direct and indirect domestic subsidiaries, including T-Mobile USA and its subsidiaries and, on and after April 1, 2020, Sprint LLC (formerly known as Sprint Corporation), a Delaware limited liability company (“Sprint”) and its subsidiaries. References to “Sprint Communications” refer to Sprint Communications LLC (formerly known as Sprint Communications, Inc.), a Kansas limited liability company. References to “T-Mobile USA” and the “Issuer” refer to T-Mobile USA, Inc. only. T-Mobile USA’s corporate parent is T-Mobile US, Inc., which we refer to in this prospectus on a stand-alone basis as “T-Mobile US” or “Parent.” T-Mobile US has no operations separate from its investment in T-Mobile USA. Accordingly, unless otherwise noted, all of the business and financial information in this prospectus, including the factors identified under “Risk Factors” beginning on page 13, is presented for Parent on a consolidated basis.

No dealer, salesperson or other person has been authorized to give any information or to make any representations other than those contained or incorporated by reference in this prospectus in connection with the exchange offer, and, if given or made, such information or representations must not be relied upon as having been authorized by T-Mobile. This prospectus does not constitute an offer of any securities other than those to which it relates or an offer or a solicitation by anyone in any jurisdiction in which such offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make such offer or solicitation in such jurisdiction. Neither the delivery of this prospectus nor any sale made hereunder shall under any circumstance create an implication that there has been no change in the affairs of our Company since the date hereof of this prospectus.

Certain statements in this prospectus, the documents incorporated by reference and our other public statements include “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, including information concerning our future results of operations, are forward-looking statements. These forward-looking statements are generally identified by the words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “could” or similar expressions. Forward-looking statements are based on current expectations and assumptions, which are subject to risks and uncertainties that may cause actual results to differ materially from the forward-looking statements. The following important factors, along with the risk factors identified under “Risk Factors” and the risk factors incorporated by reference herein, could affect future results and cause those results to differ materially from those expressed in the forward-looking statements:

Additional information concerning these and other risk factors is contained in the section titled “Risk Factors” in this prospectus and the documents incorporated herein by reference.

Forward-looking statements in this prospectus or the documents incorporated by reference speak only as of the date of this prospectus or the applicable document incorporated by reference (or such earlier date as may be specified in the applicable document), as applicable, are based on assumptions and expectations as of such dates, and involve risks, uncertainties and assumptions, many of which are beyond our ability to control or predict, including the factors above. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. We undertake no obligation to revise or publicly release the results of any revision to these forward-looking statements, except as required by law. For more information, see the section entitled “Where You Can Find More Information.” The results presented for any period may not be reflective of results for any subsequent period.

You should carefully read and consider the cautionary statements contained or referred to in this section in connection with any subsequent written or oral forward-looking statements that may be issued by us or persons acting on our behalf, and all future written and oral forward-looking statements attributable to us are expressly qualified in their entirety by the foregoing cautionary statements.

Prior to making a decision to participate in the exchange offer, you should carefully consider the risks described below, as well as the risks and other information contained or incorporated by reference in this prospectus, including the “Risk Factors” in Parent’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on February 11, 2022 and Parent’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2022, filed on May 6, 2022. If any of the risks described in this prospectus, or the risks described in any documents incorporated by reference in this prospectus, actually occur, our business, prospects, financial condition or operating results could be harmed. In such case, the trading price of the Notes could decline, and you may lose all or part of your investment.

We will issue Exchange Notes pursuant to the exchange offer only after a timely receipt of your Original Notes, a properly completed and duly executed letter of transmittal and all other required documents. Therefore, if you want to tender your Original Notes, please allow sufficient time to ensure timely delivery. If we do not receive your Original Notes, letter of transmittal and other required documents by the expiration time of the exchange offer, we will not accept your Original Notes for exchange. We are generally under no duty to give notification of defects or irregularities with respect to the tenders of Original Notes for exchange. If there are defects or irregularities with respect to your tender of Original Notes, we may not accept your Original Notes for exchange.

We did not register the Original Notes and do not intend to do so following the exchange offer. Original Notes that are not tendered will therefore continue to be subject to the existing transfer restrictions and may be transferred only in limited circumstances under applicable securities laws. Because we anticipate that most holders of the Original Notes will elect to exchange their Original Notes for Exchange Notes due to the absence of restrictions on the resale of Exchange Notes under the Securities Act, we anticipate that the liquidity of the market for any Original Notes remaining after the completion of this exchange offer may be substantially limited. If you do not exchange your Original Notes, you will lose your right, except in limited circumstances, to have your Original Notes registered under the federal securities laws. As a result, if you hold Original Notes after the exchange offer, you may be unable to sell your Original Notes and the value of the Original Notes may decline. We have no obligation, except in limited circumstances, and do not currently intend, to file an additional registration statement to cover the resale of Original Notes that did not tender in the exchange offer or to re-offer to exchange the Exchange Notes for Original Notes following the expiration of the exchange offer.

Based on interpretations of the staff of the SEC contained in Exxon Capital Holdings Corp., SEC no-action letter (April 13, 1988), Morgan Stanley & Co. Inc., SEC no-action letter (June 5, 1991) and Shearman & Sterling, SEC no-action letter (July 2, 1983), we believe that you may offer for resale, resell or otherwise transfer the Exchange Notes without compliance with the registration and prospectus delivery requirements of the Securities Act. However, in some instances described in this prospectus under “Plan of Distribution,” you will remain obligated to comply with the registration and prospectus delivery requirements of the Securities Act to transfer your Exchange Notes. In these cases, if you transfer any Exchange Note without delivering a prospectus meeting the requirements of the Securities Act or without an exemption from registration of your Exchange Notes under the Securities Act, you may incur liability under the Securities Act. We do not and will not assume, or indemnify you against, this liability.

We have, and we expect that we will continue to have, a substantial amount of debt. Our ability to make payments on our debt, to repay our indebtedness when due and to fund our capital intensive business and operations and significant planned capital expenditures will depend on our ability to generate cash in the future. There can be

no assurance that sufficient funds will be available to us under our borrowings or otherwise. Our ability to produce cash from operations is subject to a number of risks, including:

Any of these risks could impair our ability to fund our operations or limit our ability to obtain additional spectrum, or expand our business as planned, which could have a material adverse effect on our business, financial condition and operating results. Any such risks could also have an adverse effect on the trading prices of the Notes.

To the extent we become party to any hedging arrangements, we may be exposed to credit-related losses in the event of nonperformance by counterparties to such hedging agreements. The primary credit exposure that we have with respect to such hedging agreements is that a counterparty will default on payments due, which could result in us having to acquire a replacement derivative from a different counterparty at a higher cost or we may be unable to find a suitable replacement. Although counterparties to any hedging agreements may be major financial institutions we would still be exposed to credit risk with these institutions. In addition, any netting and/or set off rights we may have through master netting arrangements with these counterparties may not apply to affiliates of a counterparty with whom we may have various other financial arrangements. If any financial institutions that are parties to any hedging agreements with us were to default on their payment obligations to us, declare bankruptcy or become insolvent, we may be unhedged against the underlying exposures. Any of these risks could have a material adverse effect on our business, financial condition and operating results. Additionally, if the counterparties’ and our obligations under any hedging agreements are required to be secured by cash or U.S. Treasury securities, any posting of collateral by us under such arrangements would negatively impact our liquidity. The modification or termination of any such hedging agreements could also negatively impact our liquidity or other financial metrics.

Some of our debt also has a floating rate of interest linked to various indices. If changes in the indices result in interest rate increases, debt service requirements will increase, which could adversely affect our cash flow and operating results.

In addition, any agreements we have and may continue to enter into to limit our exposure to interest rate increases may not offer complete protection from this risk, and any portion of our indebtedness not subject to such agreements would have full exposure to interest rate increases.

Any of these risks could have a material adverse effect on our business, financial condition and operating results.

Although we have substantial indebtedness, we may still be able to incur significantly more debt, including more secured debt, as market conditions and contractual obligations permit, which could further reduce the cash available to us to invest in operations, as a result of increased debt service obligations. The terms of the agreements governing our long-term indebtedness allow for the incurrence of additional indebtedness by us and our subsidiaries, subject to specified limitations. In particular, as of March 31, 2022, we had $5.5 billion available for borrowings under the Revolving Credit Facility (as defined under “Description of Other Indebtedness and Certain Financing Transactions—Credit Agreement”). The more leveraged we become, the more we, and in turn the holders of our securities, become exposed to the risks described above in the risk factor entitled “Our substantial level of indebtedness could adversely affect our business, financial condition and operating results, and senior creditors would have a secured claim to any collateral securing the debt owed to them.”

The Notes and the Guarantees will be general unsecured, unsubordinated obligations ranking effectively junior in right of payment to all existing and future secured debt of Parent, the Issuer and of each Subsidiary Guarantor, including the Outstanding T-Mobile Secured Notes and borrowings under the Credit Agreement, to the extent of the value of the collateral securing such debt. The Notes also will permit us to incur certain additional secured debt.

If the Issuer or a guarantor is declared bankrupt, becomes insolvent or is liquidated or reorganized, any secured debt of the Issuer or that guarantor, including under the Outstanding T-Mobile Secured Notes and the Credit Agreement, will be entitled to be paid in full from the assets of the Issuer or guarantor, as applicable, securing that debt before any payment may be made with respect to Notes or the Guarantees of such guarantor.

Holders of the Notes will participate ratably in any remaining assets with all other holders of the Issuer’s and the guarantors’ unsecured obligations that are not by their terms subordinated to the Notes, based upon the respective amounts owed. In any of the foregoing events, there may not be sufficient assets to pay the indebtedness and other obligations owed to secured creditors and the amounts due on the Notes. As a result, holders of the Notes would likely receive less, ratably, than holders of secured obligations of the Issuer and the guarantors. It is possible that with respect to the Guarantees, there will be no assets from which claims of holders of the Notes can be satisfied.

The Notes and the Guarantees will be structurally subordinated to any existing or future liabilities and other obligations of the Issuer’s or the guarantors’ non-guarantor subsidiaries, including the Existing Sprint Spectrum-Backed Notes, factoring arrangements and tower obligations. Accordingly, creditors of current and future subsidiaries of the Issuer or the guarantors that are not obligors with respect to the Notes would have claims with respect to the assets of those subsidiaries that would rank structurally senior to the Notes and the Guarantees. In the event of any distribution or payment of assets of such subsidiaries in any dissolution, winding up, liquidation, reorganization or other bankruptcy proceeding, the claims of those creditors would have to be satisfied prior to making any such distribution or payment to the Issuer or the applicable guarantor in respect of direct or indirect equity interests in such subsidiaries. Certain subsidiaries of the Issuer that are prohibited from providing guarantees of the Notes (such as certain designated special purpose entities and a reinsurance subsidiary), as well as non-wholly owned and immaterial subsidiaries do not provide guarantees of the Original Notes and will not provide guarantees of the Notes. See “Description of Notes—Brief Description of the Notes and the Note Guarantees—The Note Guarantees.”

Our ability to meet existing or future debt obligations and to reduce indebtedness will depend on future performance and the other cash requirements of our businesses. Our performance, to a certain extent, is subject to general economic conditions and financial, competitive, business, political, regulatory and other factors, including

third party rating agency assessments, that are beyond our control. In addition, our ability to borrow funds in the future to make payments on debt will depend on the satisfaction of covenants in the indentures governing the Notes and the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes and the Existing Sprint Unsecured Notes, the Credit Agreement, other debt agreements and other agreements we may enter into in the future. Specifically, under the Revolving Credit Facility under our Credit Agreement, we will need to maintain certain financial ratios on a quarterly basis. We cannot assure you that we will continue to generate sufficient cash flow from operations or that future equity issuances or borrowings will be available to us in an amount sufficient to enable us to satisfy financial covenants under the Credit Agreement, service our debt or repay our indebtedness in a timely manner or on favorable or commercially reasonable terms, or at all. If we are unable to satisfy financial covenants or to generate sufficient cash to timely repay our debt, our lenders could accelerate the maturity of some or all of our outstanding indebtedness. As a result, we may need to refinance all or a portion of our remaining existing indebtedness prior to its maturity. We also expect to need to refinance certain indebtedness. Disruptions in the financial markets, unfavorable rating agency assessments, the general amount of debt being refinanced at the same time, and our financial position and performance could make it more difficult to obtain debt or equity financing on favorable or commercially reasonable terms or at all. In addition, instability in the global financial markets has from time to time resulted in volatility in the capital markets. This volatility could limit our access to the credit markets, leading to higher borrowing costs or, in some cases, the inability to obtain financing on terms that are acceptable to us, or at all. Any such failure to obtain additional financing could jeopardize our ability to repay, refinance or reduce debt obligations. If we were able to obtain funds, it may not be on terms and conditions acceptable to us, which could limit or preclude our ability to pursue new opportunities, expand our service, upgrade our networks, engage in acquisitions or purchase additional spectrum, thus limiting our ability to expand our business, which could have a material adverse effect on our business, financial condition and operating results.

Further, should we need to raise additional capital, the foreign ownership restrictions mandated by the FCC, and applicable to us, could limit our ability to attract additional equity financing outside the United States.

We have in the past been the subject of inquiries or offers related to potential strategic transactions (such as an acquisition of the Company), we may be the subject of such inquires or offers in the future, and we may engage in discussions or negotiations regarding such inquiries or offers that may ultimately lead to a transaction. The indentures governing the Original Notes, the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes, the Existing Sprint Spectrum-Backed Notes and certain of the Existing Sprint Unsecured Notes provide, and the indentures governing the Exchange Notes will provide, that, upon the occurrence of certain change of control triggering events, which change of control triggering events include a change of control combined with certain ratings downgrades or withdrawals as described further below, the Issuer will be required to offer to repurchase all Outstanding T-Mobile Secured Notes, all outstanding Existing Sprint Spectrum-Backed Notes, the applicable Existing Sprint Unsecured Notes and all outstanding Notes and other Existing T-Mobile Unsecured Notes at 101% of the principal amount thereof plus accrued and unpaid interest, if any, to, but not including, the date of repurchase. See “Description of Notes—Repurchase at the Option of Holders—Change of Control Triggering Event” and “Description of Other Indebtedness and Certain Financing Transactions.” In addition, any such change of control triggering event is expected to cause an event of default under the Credit Agreement, entitling the lenders to declare all amounts outstanding thereunder to be immediately due and payable. Such a change of control would also trigger repayments with respect to our securitization transactions and capital leases. We may not have access to sufficient funds at the time of the change of control triggering event to make the required repurchases of the Notes, the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes, the Existing Sprint Spectrum-Backed Notes and the applicable Existing Sprint Unsecured Notes and to repay outstanding amounts under the Credit Agreement, or contractual restrictions may not allow such repurchases or repayments.

Not all change of control transactions would trigger these repurchase or repayment obligations. Specifically, these repurchase or repayment obligations would not be triggered unless both (i) such a transaction constitutes a “Change of Control” under the applicable indenture or credit agreement and (ii) such “Change of Control” is accompanied or followed by certain downgrades or withdrawals of the credit rating with respect to the applicable notes (in the case of any such indenture) or T-Mobile USA (in the case of the Credit Agreement). In the event that

we undergo a significant corporate transaction that does not constitute a change of control triggering event, the Notes and such other obligations generally would be permitted to remain outstanding in accordance with their terms.

The failure to purchase the Notes, the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes, the Existing Sprint Spectrum-Backed Notes or the applicable Existing Sprint Unsecured Notes, as required under the respective indentures, would result in defaults under such indentures in addition to any events of default under the Credit Agreement resulting from a change of control triggering event thereunder, any of which could have material adverse consequences for us and the holders of the Exchange Notes. Any such event of default would likely trigger an event of default on other outstanding or future indebtedness.

The indentures governing the Notes, the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes and the Existing Sprint Unsecured Notes, the Credit Agreement and other financing arrangements, impose, and the indentures governing the Exchange Notes will impose, significant operating and financial restrictions on us. These restrictions, subject in certain cases to customary baskets, exceptions and incurrence-based ratio tests, limit our and our subsidiaries’ ability to engage in some transactions. In particular, the Credit Agreement and the indentures governing the Existing T-Mobile Unsecured Notes include, and the indentures governing the Exchange Notes will include, restrictions limiting our and our subsidiaries’ ability to:

In addition, the indentures governing the Original Notes, the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes and Existing Sprint Unsecured Notes and the Credit Agreement limit, and the indentures governing the Exchange Notes will limit, our and our subsidiaries’ ability to:

In addition, the Revolving Credit Facility contains a financial maintenance covenant, requiring us to maintain a total first lien net leverage ratio at the end of each fiscal quarter of 3.30:1.00 or less. Any future debt that we incur may contain financial maintenance covenants as well. These restrictions could limit our ability to obtain debt financing, repurchase stock, refinance or pay principal on our outstanding debt, complete acquisitions for cash or debt or react to changes in our operating environment or the economy.

Any failure to comply with the restrictions of the indentures governing the Notes, the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes or the Existing Sprint Unsecured Notes, the Credit Agreement or other financing agreements may result in an event of default under these agreements, which in turn may result in defaults or acceleration of obligations under these agreements and other agreements, giving our lenders and other debt holders the right to terminate any commitments they had made to provide us with further funds and to require us to repay all amounts then outstanding. Any of these events would have a material adverse effect on our business, financial condition and operating results.

The Guarantee of a guarantor will be automatically and unconditionally released in respect of the Notes of any series:

If any such Guarantee is released, no holder of the Notes will have a claim as a creditor against the applicable guarantor, and the indebtedness and other liabilities of such former Subsidiary Guarantor will be structurally senior to the claim of any holder of the Notes. See “Description of Notes—Brief Description of the Notes and the Note Guarantees—The Note Guarantees.”

The Guarantees may be subject to review and potential avoidance under federal bankruptcy law or relevant state fraudulent conveyance laws if we or any guarantor file a petition for bankruptcy or our creditors file an involuntary petition for bankruptcy against us or any guarantor. Under these laws, if a court were to find that, at the time a guarantor incurred debt (including debt represented by the Guarantee), such guarantor:

The measure of insolvency for purposes of the foregoing considerations will vary depending upon the law of the jurisdiction that is being applied in any such proceeding, such that we cannot be certain as to the standards a court would use to determine whether or not the Issuer or the guarantors were insolvent at the relevant time or, regardless of the insolvency standard applied by the court, that such court would not determine (i) that the Issuer or a guarantor were indeed insolvent on that date, (ii) that any payments to the holders of the Notes (including under the Guarantees) did not constitute preferences, fraudulent transfers or conveyances on other grounds or (iii) whether the Notes or any Guarantees would be subordinated to the Issuer’s or any of the guarantors’ other debt. Generally, however, an entity would be considered insolvent if, at the time it incurred the debt or issued the Guarantee:

As a general matter, value is given for a transfer or an obligation if, in exchange for the transfer or obligation, property is transferred or a valid antecedent debt is secured or satisfied. A court would likely find that a guarantor did not receive “reasonably equivalent value” (or fair consideration for) its Guarantee to the extent the guarantor did not obtain a reasonably equivalent benefit directly or indirectly from the issuance of the Notes. Thus, if the Guarantees were legally challenged, any Guarantee could be subject to the claim that, since the Guarantee was incurred for the benefit of the Issuer, and only indirectly for the benefit of the guarantor, the obligations of the applicable guarantor were incurred for less than “reasonably equivalent value” (or fair consideration). Therefore, if a court were to find that the applicable guarantor was insolvent or rendered insolvent by the incurrence of the Guarantee or one of the other conditions above (relating to the guarantor’s financial condition) were satisfied, the court could avoid the obligations under the Guarantees, subordinate them to the applicable guarantor’s other debt or take other action detrimental to the holders of the Notes.

If a Guarantee is avoided as a fraudulent conveyance, fraudulent transfer, or preference, or found to be unenforceable for any other reason, you will not have a claim against that obligor and will only be our creditor or that of any guarantor whose obligation was not set aside or found to be unenforceable. In addition, the loss of a Guarantee generally will constitute an event of default under the indentures governing the Notes, the Outstanding T-Mobile Secured Notes and the other Existing T-Mobile Unsecured Notes and the Credit Agreement, which events of default would allow the relevant noteholders or lenders to accelerate the amounts due and payable thereunder, and we may not be able to pay any such amounts.

The indentures governing the Notes will contain a provision intended to limit each guarantor’s liability to the maximum amount that it could incur without causing the incurrence of obligations under its Guarantee to be a fraudulent transfer. This provision may not be effective (as a legal matter or otherwise) to protect the Guarantees from being avoided under fraudulent transfer law, or may eliminate the guarantor’s obligations or reduce the guarantor’s obligations to an amount that effectively makes the Guarantee worthless. In a Florida bankruptcy court decision (which was subsequently reversed by a district court on other grounds and then reinstated by the applicable circuit court of appeals), this kind of provision was found to be ineffective to protect the Guarantees.

In addition, any payment by us pursuant to the Notes or by a guarantor under a Guarantee made at a time we or such guarantor were found to be insolvent could be avoided as a preferential transfer under the U.S. Bankruptcy Code and required to be returned to us or such guarantor or to a fund for the benefit of our or such guarantor’s

creditors if such payment is made to an insider within a one-year period prior to a bankruptcy filing or within 90 days for any non-insider party, and such payment would give such insider or non-insider party more than such party would have received in a distribution under the U.S. Bankruptcy Code in a hypothetical Chapter 7 case, subject to applicable defenses.

Finally, as a court of equity, the bankruptcy court may subordinate the claims in respect of the Notes or the Guarantees to other claims against us under the principle of equitable subordination if the court determines that (1) a holder of the Notes or the Guarantees engaged in some type of inequitable conduct, (2) the inequitable conduct resulted in injury to our other creditors or conferred an unfair advantage upon the holders of the Notes and (3) equitable subordination is not inconsistent with the provisions of the U.S. Bankruptcy Code.

For so long as any obligations under the Credit Agreement remain outstanding, any guarantee of the Notes may be released without action by, or consent of, any holder of the Notes, if the related guarantor is no longer a guarantor of obligations under the Credit Agreement or certain other indebtedness of the Issuer or any other guarantor (except, in each case, by or as a result of payment under such guarantee or direct obligation). See “Description of Notes—Brief Description of the Notes and the Note Guarantees—The Note Guarantees.” The lenders under the Credit Agreement will have the discretion to release the guarantees under the Credit Agreement in a variety of circumstances. You will not have a claim as a creditor against any entity that is no longer a guarantor of the Notes, and the indebtedness and other liabilities, including trade payables, whether secured or unsecured, of former guarantor subsidiaries will be structurally senior to claims of holders of the Notes.

The indentures governing the Notes provide that many of their covenants will cease to apply to us if the Notes are rated investment grade by at least two of Moody’s, S&P and Fitch, provided at such time no default or event of default has occurred and is continuing. The indentures further provide that these covenants will not be later reinstated in the event that the ratings of the Notes subsequently decline. These covenants restrict, among other things, our ability to pay dividends, to incur debt and to enter into certain other transactions. There can be no assurance that the Notes will ever be rated investment grade. However, termination of these covenants would allow us to engage in certain transactions that would not be permitted while these covenants were in force. See “Description of Notes—Certain Covenants—Changes in Covenants When Notes Rated Investment Grade.” Although the indentures will continue to restrict the Issuer’s ability to create liens or other encumbrances after the Notes are rated investment grade by at least two of Moody’s, S&P and Fitch, such covenant may be modified at the Issuer’s election, following such a rating event, to restrict only the Issuer and Material Subsidiaries (as defined under “Description of the Notes—Certain Definitions”) from incurring liens on principal properties or upon capital stock or indebtedness of any Material Subsidiary (as defined under “Description of Notes—Certain Definitions”) that directly owns any principal property, subject to certain exceptions set forth in the indentures governing the Notes. See “Description of Notes—Certain Covenants—Liens.” In addition, at the Issuer’s election, following such a rating event, the Guarantees of the Subsidiary Guarantors may be released. See “—The Guarantees may be released upon the occurrence of certain events.”

The market price of the Notes could decline as a result of our, or existing investors’, sales of the Issuer’s debt securities in the market after this exchange offer, or the perception that such sales could occur. These sales, or the possibility that these sales may occur, also might make it more difficult for the Issuer to sell other debt securities in the future at a time and on terms that it deems appropriate.

After giving effect to the Q2 Repayment, as of March 31, 2022, we would have had outstanding approximately $70.0 billion in aggregate principal amount of debt securities, maturing in 2022 through 2060, $40.2 billion of which would be senior secured debt securities and $29.8 billion of which would be senior unsecured debt securities. Deutsche Telekom, which currently controls approximately 51.8% of the common stock of Parent, would have held

$1.5 billion of these debt securities, maturing in 2028. We have on file an effective shelf registration statement with respect to these debt securities held by Deutsche Telekom and Deutsche Telekom could sell all or any portion of them at any time.

An active trading market may not exist for the Exchange Notes or any Original Notes that remain outstanding after the exchange offer. In addition, subsequent to their initial issuance, the Notes may trade at a discount from their initial offering price (or, in the case of Exchange Notes, the initial offering price of the Original Notes of the same series), depending upon prevailing interest rates, the market for similar notes, our operating performance and financial condition and other factors. The Issuer does not intend to apply for the Exchange Notes or any Original Notes that remain outstanding after the exchange offer to be listed on any securities exchange or to arrange for the Exchange Notes or any Original Notes that remain outstanding after the exchange offer to be quoted on any quotation system. An active trading market may not exist for the Existing Notes and Exchange Notes or may cease to exist. In addition, there may cease to be a market for the Original Notes. If an active public trading market for the Notes does not exist or ceases to exist, the market price and liquidity of the Notes may be adversely affected.

Credit rating agencies continually revise their ratings for companies they follow, including us. Changes in our performance, leverage or industry, or changes in the credit ratings agencies’ ratings methodologies, could lead to ratings downgrades. Any ratings downgrade could adversely affect the trading price of the Notes, or the trading market for the Notes, to the extent a trading market for the Notes exists or develops. The condition of the financial and credit markets and prevailing interest rates have fluctuated in the past and are likely to fluctuate in the future, and any fluctuation may impact the trading price of the Notes.

T-Mobile US’ Certificate of Incorporation provides that, unless T-Mobile US consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall be the sole and exclusive forum for (i) any derivative action or proceeding brought on behalf of T-Mobile US, (ii) any action asserting a claim of breach of a fiduciary duty owed by any director, officer or employee of T-Mobile US to T-Mobile US or its stockholders, (iii) any action asserting a claim arising pursuant to any provision of the General Corporation Law of the State of Delaware, the Certificate of Incorporation or T-Mobile US’ bylaws or (iv) any other action asserting a claim arising under, in connection with, and governed by the internal affairs doctrine. This choice of forum provision does not waive our compliance with our obligations under the federal securities laws and the rules and regulations thereunder. Moreover, the provision does not apply to suits brought to enforce a duty or liability created by the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or by the Securities Act.

This choice of forum provision may increase costs to bring a claim, discourage claims or limit an investor’s ability to bring a claim in a judicial forum that the investor finds favorable for disputes with T-Mobile US or its directors, officers or employees, which may discourage such lawsuits against T-Mobile US and its directors, officers and employees, even though an action, if successful, might benefit our investors. Alternatively, if a court were to find the choice of forum provision to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such matters in other jurisdictions, which could increase our costs of litigation and adversely affect our business and financial condition.

We will not receive any cash proceeds from the issuance of the Exchange Notes. We are making this exchange offer solely to satisfy our obligations under the registration rights agreement entered into in connection with the offering of the Original Notes. In consideration for issuing the Exchange Notes as contemplated in this prospectus, we will receive in exchange Original Notes in like principal amount, which will be cancelled, and, as such, issuing the Exchange Notes will not result in any increase in our indebtedness or be financed with new borrowings.

We entered into a registration rights agreement (the “registration rights agreement”) with the initial purchasers of the Original Notes. In the registration rights agreement, we and the guarantors agreed to, at our cost:

In addition, we agreed to provide that upon the effectiveness of the exchange offer registration statement, we would promptly commence the exchange offer, whereby the Exchange Notes will be offered in exchange for surrender of the Original Notes, and that we will keep the registered exchange offer open for not less than 20 business days (or longer if required by applicable law including in accordance with the requirements of Regulation 14E under the Exchange Act) after the date notice of the registered exchange offer is first mailed, sent or given to the noteholders. For each note surrendered to the Issuer for exchange pursuant to the registered exchange offer, the holder of such note will receive an Exchange Note having a principal amount equal to that of the surrendered note.

We are offering the Exchange Notes under this prospectus in an exchange offer for the Original Notes to satisfy our obligations under the registration rights agreement. We refer to our offer to exchange the Exchange Notes for the Original Notes as the “exchange offer.”

Based on interpretations by the staff of the SEC, as described in no-action letters issued to third parties that are not related to us, including Morgan Stanley & Co., Inc. (available June 5, 1991) and Exxon Capital Holdings Corporation (available May 13, 1988), as interpreted in the SEC’s letter to Shearman & Sterling LLP (dated July 2, 1993), we believe the Exchange Notes will be freely transferable by holders other than our affiliates after the exchange offer without further registration under the Securities Act if the holder of the Exchange Notes represents to us in the exchange offer that it is acquiring the Exchange Notes in the ordinary course of its business, that it has no arrangement or understanding with any person to participate in the distribution of the Exchange Notes and that it is not our affiliate, as such terms are interpreted by the SEC; provided, however, that broker-dealers (“Participating Broker-Dealers”) receiving Exchange Notes in the exchange offer will have a prospectus delivery requirement with respect to resales of such Exchange Notes. We also believe that Participating Broker-Dealers may fulfill their prospectus delivery requirements with respect to Exchange Notes (other than a resale of an unsold allotment from the sale of the Original Notes) with this prospectus.

We have not entered into any arrangement or understanding with any person who will receive Exchange Notes in the exchange offer to distribute those securities following completion of the exchange offer. We are not aware of any person that will participate in the exchange offer with a view to distribute the Exchange Notes. If you tender your Original Notes in the exchange offer with the intention of participating in any manner in a distribution of the Exchange Notes, you:

Unless an exemption from registration is otherwise available, the resale by any security holder intending to distribute Exchange Notes should be covered by an effective registration statement under the Securities Act containing the selling security holder’s information required under the Securities Act. This prospectus may be used for an offer to resell, a resale or other retransfer of Exchange Notes only as specifically described in this prospectus. Each broker-dealer that receives Exchange Notes for its own account in exchange for Original Notes,

where such Original Notes were acquired by such broker-dealer as a result of market-making or other trading activities, must acknowledge that it will deliver a prospectus meeting the requirements of the Securities Act (or, to the extent permitted by law, make available a prospectus meeting the requirements of the Securities Act to purchasers) in connection with any resale of such Exchange Notes. See “Plan of Distribution.”

In the registration rights agreement, we agreed that in the event that:

If the exchange offer registration statement is not on file with the SEC on or prior to the Target Filing Date, or, if applicable, the shelf registration statement is required to be filed but is not on file with the SEC on or prior to the Target Filing Date, or if applicable, the shelf registration statement is declared effective but thereafter ceases to be effective or usable and such failure to remain effective or usable exists for more than 120 days (whether or not consecutive) in any 12-month period (in each case subject to certain exceptions), then, upon the occurrence of any such events, additional interest shall accrue on the principal amount of the Original Notes at a rate of 0.25% per annum for the first 90-day period beginning on and including such date, increasing by an additional 0.25% per annum with respect to any subsequent 90-day period up to a maximum amount of additional interest of 0.50% in the

aggregate per annum thereafter, until the Original Notes cease to be registrable securities or, if earlier, when the exchange offer is completed, the shelf registration statement becomes effective or, if such shelf registration statement ceased to be effective, when such shelf registration statement again becomes effective. Such interest will be computed ratably on the basis of twelve 30-day months.

Under certain circumstances, we and the guarantors may delay the filing or the effectiveness of the exchange offer registration statement or the shelf registration statement and will not be required to maintain the effectiveness thereof or amend or supplement the exchange offer registration statement or the shelf registration statement for one or more periods not to exceed an aggregate of 120 days during any 12-month period. Any delay period will not defer our obligation to pay additional interest.

This summary of certain provisions of the registration rights agreement does not purport to be complete and is subject to, and is qualified in its entirety by reference to, all the provisions of the registration rights agreement. A copy of each registration rights agreement is an exhibit to the registration statement that includes this prospectus.

Upon the terms and subject to the conditions described in this prospectus and in the letter of transmittal, we will accept for exchange any Original Notes properly tendered and not withdrawn prior to the expiration time of the exchange offer. We will issue $1,000 principal amount of Exchange Notes in exchange for each $1,000 principal amount of Original Notes surrendered under the exchange offer and accepted by us. Original Notes may be tendered only in integral multiples of $1,000, subject to a $2,000 minimum, and untendered Original Notes may only be in a minimum denomination of $2,000 and integral multiples of $1,000 in excess thereof.

The terms of the Exchange Notes are identical in all material respects to those of the Original Notes, except the Exchange Notes will not be subject to transfer restrictions and holders of the Exchange Notes, with limited exceptions, will have no registration rights. Also, the Exchange Notes will not include provisions contained in the Original Notes that required payment of additional interest in the event we failed to satisfy our registration obligations with respect to the Original Notes. Each series of Exchange Notes will be issued under and entitled to the benefits of the same indenture that authorized the issuance of the related Original Notes.

The exchange offer is not conditioned on any minimum aggregate principal amount of Original Notes being tendered for exchange.

As of the date of this prospectus, $800,000,000 in aggregate principal amount of the unregistered 2.250% Senior Notes due 2026, $1,100,000,000 in aggregate principal amount of the unregistered 3.375% Senior Notes due 2029, and $1,100,000,000 in aggregate principal amount of the unregistered 3.500% Senior Notes due 2031 are outstanding. This prospectus and the letter of transmittal are being sent to all registered holders of the Original Notes. There will be no fixed record date for determining registered holders of the Original Notes entitled to participate in the exchange offer.

We intend to conduct the exchange offer in accordance with the provisions of the registration rights agreement, the applicable requirements of the Securities Act and the Exchange Act, and the SEC rules and regulations. Original Notes that are not tendered for exchange in the exchange offer:

We will be deemed to have accepted for exchange properly tendered Original Notes when we have given written notice of the acceptance to the exchange agent and complied with the applicable provisions of the registration rights agreement. The exchange agent will act as agent for the tendering holders for the purposes of receiving the Exchange Notes from us. We will issue the Exchange Notes promptly after the expiration of the exchange offer.

If you tender Original Notes in the exchange offer, you will not be required to pay brokerage commissions or fees or, subject to the instructions in the letter of transmittal, transfer taxes with respect to the exchange of Original Notes. We will pay all charges and expenses, other than certain applicable taxes described below, in connection with the exchange offer. It is important that you read “—Fees and Expenses” below for more details about fees and expenses incurred in the exchange offer.

We will return any Original Notes that we do not accept for exchange for any reason without expense to the tendering holder as promptly as practicable after the expiration or termination of the exchange offer.

The exchange offer is not subject to any federal or state regulatory requirements or approvals other than securities laws and blue sky laws.

The exchange offer will expire at 5:00 p.m., New York City time, on June 22, 2022, unless at our sole discretion we extend the exchange offer.

We expressly reserve the right, at any time or at various times, to extend the period of time during which the exchange offer is open. We may delay acceptance for exchange of any Original Notes by giving oral or written notice of the extension to their holders. During any such extensions, all Original Notes you have previously tendered will remain subject to the exchange offer for that series, and we may accept them for exchange.

To extend the exchange offer, we will notify the exchange agent orally or in writing (if oral to be promptly confirmed in writing) of any extension. We also will make a public announcement of the extension no later than 9:00 a.m., New York City time, on the next business day after the previously scheduled expiration time.

If any of the conditions described below under “—Conditions to the Exchange Offer” have not been satisfied with respect to the exchange offer, we reserve the right, at our sole discretion:

We will give oral or written notice (if oral to be promptly confirmed in writing) of such extension, delay or termination to the exchange agent. Subject to the terms of the registration rights agreement, we also reserve the right to amend the terms of the exchange offer in any manner.

Any such extension, delay in acceptance, termination or amendment will be followed as promptly as practicable by oral or written notice thereof to the registered holders of the Original Notes. If we amend the exchange offer in a manner that we determine to constitute a material change, we will promptly disclose that amendment by means of a prospectus supplement and we will extend the offer period if necessary so that at least five business days remain in the offer period following notice of the material change. We will distribute the supplement to the registered holders of the Original Notes. Depending on the significance of the amendment and the manner of disclosure to the registered holders, we may extend, pursuant to the terms of the registration rights agreement and the requirements of federal securities law, the exchange offer if the exchange offer would otherwise expire during such period.

Without limiting the manner in which we may choose to make public announcements of any extension, delay in acceptance, termination or amendment of the exchange offer, we have no obligation to publish, advertise or otherwise communicate any such public announcement, other than by making a timely release to an appropriate news agency.

Notwithstanding any other provision of the exchange offer and subject to the terms of the registration rights agreement, we will not be required to accept for exchange, or to issue Exchange Notes in exchange for, any Original Notes and may terminate or amend the exchange offer, if at any time before the expiration time of the exchange offer any of the following events occur:

In addition, we will not be obligated to accept for exchange the Original Notes of any holder that has not made to us:

We expressly reserve the right to amend or terminate the exchange offer notwithstanding the satisfaction of the foregoing, and to reject for exchange any Original Notes upon the occurrence of any of the conditions to the exchange offer specified above. We will give oral or written notice of any extension, non-acceptance, termination or amendment to the holders of the Original Notes as promptly as practicable.

These conditions are for our sole benefit, and we may assert them or waive them in whole or in part at any time or at various times at our sole discretion. Our failure at any time to exercise any of these rights will not mean that we have waived our rights. Each right will be deemed an ongoing right that we may assert at any time or at various times. If we waive a condition, we may be required in order to comply with applicable securities laws, to extend the expiration time of the exchange offer.

In addition, we will not accept for exchange any Original Notes tendered, and will not issue Exchange Notes in exchange for any such Original Notes, if at such time any stop order has been threatened or is in effect with respect to the registration statement of which this prospectus constitutes a part or the qualification of the indentures relating to the Exchange Notes under the Trust Indenture Act of 1939.

Only a holder of the Original Notes as determined by our records or those of Deutsche Bank Trust Company Americas, as trustee or DTC may tender Original Notes in the exchange offer. To tender in the exchange offer, a holder must either (1) comply with the procedures for physical tender or (2) comply with the automated tender offer program procedures of DTC, described below.

To complete a physical tender, a holder must:

To be tendered effectively, the exchange agent must receive any physical delivery of the letter of transmittal and other required documents at its address provided above under “Prospectus Summary—The Exchange Agent” prior to the expiration time.

To complete a tender through DTC’s automated tender offer program, the exchange agent must receive, prior to the expiration time, a timely confirmation of book-entry transfer of such Original Notes into the exchange agent’s account at DTC according to the procedure for book-entry transfer described below or a properly transmitted agent’s message.

The tender by a holder that is not withdrawn prior to the expiration time and our acceptance of that tender will constitute an agreement between the holder and us in accordance with the terms and subject to the conditions described in this prospectus and in the letter of transmittal.

THE METHOD OF DELIVERY OF ORIGINAL NOTES, THE LETTER OF TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT YOUR ELECTION AND RISK. RATHER THAN MAIL THESE ITEMS, WE RECOMMEND THAT YOU USE AN OVERNIGHT OR HAND DELIVERY SERVICE. IN ALL CASES, YOU SHOULD ALLOW SUFFICIENT TIME TO ENSURE DELIVERY TO THE EXCHANGE AGENT BEFORE THE EXPIRATION TIME. YOU SHOULD NOT SEND THE LETTER OF TRANSMITTAL OR ORIGINAL NOTES TO US. YOU MAY REQUEST YOUR BROKER, DEALER, COMMERCIAL BANK, TRUST COMPANY OR OTHER NOMINEE TO EFFECT THE ABOVE TRANSACTIONS FOR YOU.

If you beneficially own Original Notes that are registered in the name of a broker, dealer, commercial bank, trust company or other nominee and you wish to tender those Original Notes, you should contact the registered holder as soon as possible and instruct the registered holder to tender on your behalf. If you are a beneficial owner and wish to tender on your own behalf, you must, prior to completing and executing the letter of transmittal and delivering your Original Notes, either:

The transfer of registered ownership may take considerable time and may not be completed prior to the expiration time.

You must have signatures on a letter of transmittal or a notice of withdrawal described below under “—Withdrawal of Tenders” guaranteed by an eligible institution unless the Original Notes are tendered:

An “eligible institution” is member firm of a registered national securities exchange or of the Financial Industry Regulatory Authority, Inc., a commercial bank or trust company having an office or correspondent in the United States, or an eligible guarantor institution within the meaning of Rule 17Ad-15 under the Exchange Act, that is a member of one of the recognized signature guarantee programs identified in the letter of transmittal.

If a person other than the registered holder of any Original Notes signs the letter of transmittal, the Original Notes must be endorsed or accompanied by a properly completed bond power. The registered holder must sign the bond power as the registered holder’s name appears on the Original Notes. An eligible institution must guarantee that signature.

If the letter of transmittal or any Original Notes or bond powers are signed by trustees, executors, administrators, guardians, attorneys-in-fact, or officers of corporations or others acting in a fiduciary or representative capacity, those persons should so indicate when signing. Unless we waive this requirement, they also must submit evidence satisfactory to us of their authority to deliver the letter of transmittal.

The exchange agent and DTC have confirmed that any financial institution that is a participant in DTC’s system may use DTC’s automated tender offer program to tender. Accordingly, participants in the program may, instead of physically completing and signing the letter of transmittal and delivering it to the exchange agent, transmit their acceptance of the exchange offer electronically. They may do so by causing DTC to transfer the Original Notes to the exchange agent in accordance with its procedures for transfer. DTC will then send an agent’s message to the exchange agent.

An agent’s message is a message transmitted by DTC to and received by the exchange agent and forming part of the book-entry confirmation, stating that:

We will determine at our sole discretion all questions as to the validity, form, eligibility, time of receipt, acceptance of tendered Original Notes and withdrawal of tendered Original Notes. Our determination will be final and binding. We reserve the absolute right to reject any Original Notes not properly tendered or any Original Notes our acceptance of which, in the opinion of our counsel, might be unlawful. Our interpretation of the terms and conditions of the exchange offer, including the instructions in the letter of transmittal, will be final and binding on all parties.

Unless waived, any defects or irregularities in connection with tenders of Original Notes must be cured within such time as we determine. Neither we, the exchange agent nor any other person will be under any duty to give notification of defects or irregularities with respect to tenders of Original Notes, nor will we or those persons incur any liability for failure to give such notification. Tenders of Original Notes will not be deemed made until such defects or irregularities have been cured or waived. Any Original Notes received by the exchange agent that are not properly tendered and as to which the defects or irregularities have not been cured or waived will be returned to the tendering holder, unless otherwise provided in the letter of transmittal, as soon as practicable following the expiration time.

In all cases, we will issue Exchange Notes for Original Notes that we have accepted for exchange in the exchange offer only after the exchange agent timely receives:

If we do not accept any tendered Original Notes for exchange for any reason described in the terms and conditions of the exchange offer or if Original Notes are submitted for a greater principal amount than the holder desires to exchange, we will return the unaccepted or non-exchanged Original Notes without expense to their tendering holder. In the case of Original Notes tendered by book-entry transfer into the exchange agent’s account at DTC according to the procedures described below, such non-exchanged Original Notes will be credited to an account maintained with DTC. These actions will occur as promptly as practicable after the expiration or termination of the exchange offer.

By signing or agreeing to be bound by the letter of transmittal, you will represent to us that, among other things:

The exchange agent will make a request to establish an account with respect to the Original Notes at DTC for purposes of the exchange offer promptly after the date of this prospectus. Any financial institution participating in DTC’s system may make book-entry delivery of Original Notes by causing DTC to transfer such Original Notes into the exchange agent’s account at DTC in accordance with DTC’s procedures for transfer.

Each broker-dealer that receives Exchange Notes for its own account in exchange for Original Notes, where such Original Notes were acquired by such broker-dealer as a result of market-making or other trading activities, must acknowledge that it will deliver a prospectus meeting the requirements of the Securities Act (or, to the extent permitted by law, make available a prospectus meeting the requirements of the Securities Act to purchasers) in connection with any resale of such Exchange Notes. See “Plan of Distribution.”

Except as otherwise provided in this prospectus, you may withdraw your tender at any time prior to the expiration time. For a withdrawal to be effective:

Any notice of withdrawal must:

If Original Notes have been tendered under the procedure for book-entry transfer described above, any notice of withdrawal must specify the name and number of the account at DTC to be credited with the withdrawn Original Notes and otherwise comply with the procedures of DTC.

We will determine all questions as to the validity, form, eligibility and time of receipt of notice of withdrawal, and our determination shall be final and binding on all parties. We will deem any Original Notes so withdrawn not to have been validly tendered for exchange for purposes of the exchange offer.

Any Original Notes that have been tendered for exchange but that are not exchanged for any reason will be returned to their holder without cost to the holder, or, in the case of Original Notes tendered by book-entry transfer into the exchange agent’s account at DTC according to the procedures described above, such Original Notes will be credited to an account maintained with DTC for the Original Notes. This return or crediting will take place as soon as practicable after withdrawal, rejection of tender or termination of the exchange offer. You may retender properly withdrawn Original Notes by following one of the procedures described above under “—Procedures for Tendering” at any time on or prior to the expiration time.

We will bear the expenses of soliciting tenders. We may make solicitation by mail, facsimile, email, telephone or in person by our officers and regular employees and those of our affiliates.

We have not retained any dealer-manager in connection with the exchange offer and will not make any payments to broker-dealers or others soliciting acceptances of the exchange offer. We will, however, pay the exchange agent reasonable and customary fees for its services and reimburse it for its related reasonable out-of-pocket expenses. We may also pay brokerage houses and other custodians, nominees and fiduciaries the reasonable out-of-pocket expenses incurred by them in forwarding copies of this prospectus, letters of transmittal and related documents to the beneficial owners of the Original Notes and in handling or forwarding tenders for exchange.

We will pay cash expenses to be incurred in connection with the exchange offer. They include:

If you tender your Original Notes for exchange, you will not be required to pay any transfer taxes. We will pay all transfer taxes, if any, applicable to the exchange of Original Notes in the exchange offer. The tendering holder will, however, be required to pay any transfer taxes, whether imposed on the registered holder or any other person, if:

If satisfactory evidence of payment of any transfer taxes payable by a tendering holder is not submitted with the letter of transmittal, the amount of the transfer taxes will be billed directly to that tendering holder. The exchange agent will retain possession of Exchange Notes with a face amount equal to the amount of the transfer taxes due until it receives payment of the taxes.

We will record the Exchange Notes at the same carrying value as the Original Notes as reflected in our accounting records on the date of the exchange. Accordingly, we will not recognize any gain or loss for accounting purposes upon completion of the exchange offer.

If you do not exchange your Original Notes for Exchange Notes in the exchange offer, you will remain subject to the existing restrictions on transfer of the Original Notes. In general, you may not offer or sell the Original Notes unless either they are registered under the Securities Act or the offer or sale is exempt from or not subject to registration under the Securities Act and applicable state securities laws. Except as required by the registration rights agreement, we do not intend to register resales of the Original Notes under the Securities Act. We generally have no obligation to re-offer to exchange the Exchange Notes for Original Notes following the expiration of the exchange offer. The tender of Original Notes in the exchange offer will reduce the outstanding principal amount of the Original Notes. Due to the corresponding reduction in liquidity, this may have an adverse effect on, and increase the volatility of, the market price of any Original Notes that you continue to hold. See “Risk Factors—Risks Related to the Exchange Offer—If you do not exchange your Original Notes, your Original Notes will continue to be subject to the existing transfer restrictions and you may be unable to sell your outstanding Original Notes.”

Participation in the exchange offer is voluntary, and you should carefully consider whether to accept. You are urged to consult your financial and tax advisors in making your decision on what action to take.

In the future, we may at our discretion seek to acquire untendered Original Notes in open market or privately negotiated transactions, through subsequent exchange offers or otherwise. We have no present plan to acquire any Original Notes that are not tendered in the exchange offer or to file a registration statement to permit resales of any untendered Original Notes, except as required by the registration rights agreement.

T-Mobile USA, Inc., a Delaware corporation (the “Issuer”), is offering to exchange, upon the terms and conditions set forth in this prospectus and the accompanying letter of transmittal, up to $800,000,000 in aggregate principal amount of 2.250% Senior Notes due 2026 (the “2026 Exchange Notes”), $1,100,000,000 in aggregate principal amount of 3.375% Senior Notes due 2029 (the “2029 Exchange Notes”), and $1,100,000,000 in aggregate principal amount of 3.500% Senior Notes due 2031 (the “2031 Exchange Notes” and, together with the 2026 Exchange Notes and the 2029 Exchange Notes, the “Exchange Notes”) for, in each case, an equal amount of its outstanding 2.250% Senior Notes due 2026 (the “2026 Original Notes” and collectively with the 2026 Exchange Notes, the “2026 Notes”), 3.375% Senior Notes due 2029 (the “2029 Original Notes” and collectively with the 2029 Exchange Notes, the “2029 Notes”), and 3.500% Senior Notes due 2031 (the “2031 Original Notes” and collectively with the 2031 Exchange Notes, the “2031 Notes” and the 2031 Original Notes together with the 2026 Original Notes and the 2029 Original Notes, the “Original Notes” and collectively with the Exchange Notes, the “Notes”).

The Original Notes were issued, and the Exchange Notes will be issued, under a base indenture (the “Base Indenture”), dated as of April 28, 2013, among the Issuer, certain Guarantors and Deutsche Bank Trust Company Americas, as trustee (together with its successors and assigns, the “Trustee”), as supplemented (i) with respect to the 2026 Notes by the Forty-Third Supplemental Indenture, dated as of January 14, 2021 (the “2026 Notes Supplemental Indenture”), (ii) with respect to the 2029 Notes by the Forty-Seventh Supplemental Indenture, dated as of March 23, 2021 (the “2029 Notes Supplemental Indenture”) and (iii) with respect to the 2031 Notes by the Forty-Eighth Supplemental Indenture, dated as of March 23, 2021 (the “2031 Notes Supplemental Indenture” and each of the 2026 Notes Supplemental Indenture, the 2029 Notes Supplemental Indenture and the 2031 Notes Supplemental Indenture, with respect to the applicable series, the “Supplemental Indenture”), each among the Issuer, T-Mobile US, Inc., a Delaware corporation and the direct parent company of the Issuer (“Parent”), the Subsidiary Guarantors, the Trustee, Deutsche Bank Trust Company Americas, as paying agent and Deutsche Bank Trust Company Americas, as registrar and transfer agent.

The 2026 Original Notes were an additional issuance of the 2.250% Senior Notes due 2026 issued by the Issuer in an aggregate principal amount of $1,000,000,000 on January 14, 2021 (the “Existing Registered 2026 Notes”) in an offering registered pursuant to the Securities Act of 1933, as amended (the “Securities Act”). The 2026 Original Notes are consolidated with and form a single series with the Existing Registered 2026 Notes and have the same respective terms except for the settlement date and offering price, and except that the Existing Registered 2026 Notes generally are freely tradable and do not contain certain terms with respect to registration rights and additional interest. However, the 2026 Original Notes are not fungible with the Existing Registered 2026 Notes, and unless and until exchanged for 2026 Exchange Notes pursuant to this exchange offer, the 2026 Original Notes will have separate CUSIP numbers from, and will not be fungible with, the Existing Registered 2026 Notes.

The 2029 Original Notes were an additional issuance of the 3.375% Senior Notes due 2029 issued by the Issuer in an aggregate principal amount of $1,250,000,000 on March 23, 2021 (the “Existing Registered 2029 Notes”) in an offering registered pursuant to the Securities Act. The 2029 Original Notes are consolidated with and form a single series with the Existing Registered 2029 Notes and have the same respective terms except for the settlement date and offering price, and except that the Existing Registered 2029 Notes generally are freely tradable and do not contain certain terms with respect to registration rights and additional interest. However, the 2029 Original Notes are not fungible with the Existing Registered 2029 Notes, and unless and until exchanged for 2029 Exchange Notes pursuant to this exchange offer, the 2029 Original Notes will have separate CUSIP numbers from, and will not be fungible with, the Existing Registered 2029 Notes.

The 2031 Original Notes were an additional issuance of the 3.500% Senior Notes due 2031 issued by the Issuer in an aggregate principal amount of $1,350,000,000 on March 23, 2021 (the “Existing Registered 2031 Notes”) in an offering registered pursuant to the Securities Act. The 2031 Original Notes are consolidated with and form a single series with the Existing Registered 2031 Notes and have the same respective terms except for the settlement date and offering price, and except that the Existing Registered 2031 Notes generally are freely tradable and do not contain certain terms with respect to registration rights and additional interest. However, the 2031 Original Notes are not fungible with the Existing Registered 2031 Notes, and unless and until exchanged for 2031 Exchange Notes pursuant to this exchange offer, the 2031 Original Notes will have separate CUSIP numbers from, and will not be fungible with, the Existing Registered 2031 Notes.

In this Description of Notes, the term “Indenture” refers to the Base Indenture as supplemented separately by the Supplemental Indenture for the applicable series of Notes. The terms of the Notes of each series include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”).

In this Description of Notes, (i) the “Issuer” refers only to T-Mobile USA, Inc. and not to any of its Subsidiaries and (ii) “Parent” refers only to T-Mobile US, Inc. and not to any of its Subsidiaries.

The obligations and covenants of the Issuer described in this Description of Notes are only of the Issuer, and not of Parent. Although Parent is a Guarantor of the Original Notes and will be a Guarantor of the Exchange Notes, Parent and any of its Subsidiaries that are not the Issuer or the Issuer’s Restricted Subsidiaries generally are not and will not be subject to any of the obligations and covenants described hereunder.

The following description is a summary of the material provisions of the Indenture applicable to both the Exchange Notes and the Original Notes. As such, when we refer to a series of Notes, we are describing the material provisions of the corresponding series of both the Original Notes and the Exchange Notes, and when we refer to the Notes, we are describing the material provisions of both the Original Notes and the Exchange Notes. The following description does not restate the terms of the Indenture in their entirety. We urge you to read the Indenture in its entirety because it, and not this Description of Notes, defines your rights as a holder of Original Notes or Exchange Notes, as applicable. For more information on how you can obtain a copy of the Base Indenture and the Supplemental Indentures, see “Where You Can Find More Information.” You can find the definitions of certain terms used in this Description of Notes under the caption “—Certain Definitions” below. Certain defined terms used in this Description of Notes but not defined below under “—Certain Definitions” have the meanings assigned to them in the Indenture.

The registered holder of a Note will be treated as the owner of such Note for all purposes. Only registered holders will have rights under the Indenture. The Original Notes were issued initially in a private transaction that was not subject to the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”).

The Original Notes of each series are, and the Exchange Notes of each series will be:

See “Risk Factors—Risks Related to the Notes—The Notes and the Guarantees will be unsecured and effectively subordinated to the Issuer’s and the guarantors’ existing and future secured indebtedness, including the Outstanding T-Mobile Secured Notes and borrowings under the Credit Agreement” and “Risk Factors—Risks Related to the Notes—The Notes and the Guarantees will be structurally subordinated to the indebtedness and other liabilities of the Issuer’s non-guarantor subsidiaries.”

The Original Notes are, and the Exchange Notes will be, guaranteed by (i) Parent and any Wholly-Owned Subsidiary of the Issuer that (x) is not an Excluded Subsidiary and (y) is an obligor under (1) the Credit Agreement

or (2) assuming such Subsidiary is not an Unrestricted Subsidiary, any capital markets debt securities in an aggregate principal amount in excess of $500.0 million and (ii) any future direct or indirect Subsidiary of Parent or any Subsidiary of Parent that directly or indirectly owns Capital Stock of the Issuer. Such entities are expected to include the Issuer’s Domestic Subsidiaries that are not Excluded Subsidiaries. These Note Guarantees are (with respect to Original Notes) or will be (with respect to Exchange Notes) joint and several obligations of the Guarantors. The obligations of each Guarantor under its Note Guarantee is (with respect to Original Notes) or will be (with respect to Exchange Notes) limited as necessary to prevent that Note Guarantee from constituting a fraudulent conveyance under applicable law. See “Risk Factors—Risks Related to the Notes—The Guarantees may be avoidable and therefore not be enforceable because of fraudulent conveyance or fraudulent transfer laws.”

Each Note Guarantee of the Notes by a Guarantor is (with respect to Original Notes) or will be (with respect to Exchange Notes):

See “Risk Factors—Risks Related to the Notes—The Notes and the Guarantees will be unsecured and effectively subordinated to the Issuer’s and the guarantors’ existing and future secured indebtedness, including the Outstanding T-Mobile Secured Notes and borrowings under the Credit Agreement” and “Risk Factors—Risks Related to the Notes—The Notes and the Guarantees will be structurally subordinated to the indebtedness and other liabilities of the Issuer’s non-guarantor subsidiaries.”

The Issuer’s existing and future Subsidiaries are or will be required to guarantee the Notes only under the circumstances described below under the subheading “—Certain Covenants—Additional Note Guarantees.” In the event of a bankruptcy, liquidation or reorganization of any non-guarantor Subsidiaries, the non-guarantor Subsidiaries will pay their trade creditors and the holders of their other debt and obligations before they will be able to distribute any of their assets to the Issuer.

As of the date of this prospectus, all of the Issuer’s Subsidiaries other than Connect CCC, LLC, Sprint Federal Operations, LLC, T-Mobile Airtime Funding LLC, T-Mobile Handset Funding LLC and T-Mobile Ventures LLC are “Restricted Subsidiaries.” However, under the circumstances described below under the caption “—Certain Covenants—Designation of Restricted and Unrestricted Subsidiaries,” the Issuer will be permitted to designate certain of its Subsidiaries as “Unrestricted Subsidiaries.” The Issuer’s Unrestricted Subsidiaries will not be subject to many of the restrictive covenants in the Indenture. The Issuer’s Unrestricted Subsidiaries will not guarantee the Notes.

Except as otherwise provided in the following paragraph, prior to the occurrence of an Investment Grade Event Election, a Guarantor of the Notes of any series (other than Parent) may not sell or otherwise dispose of all or substantially all of its assets to, or consolidate with or merge with or into (whether or not such Guarantor is the surviving Person) another Person, other than the Issuer or another Guarantor, unless:

The Note Guarantee of a Guarantor will be automatically and unconditionally released in respect of the Notes of any series:

The Issuer may issue further additional Notes of any series from time to time, and such additional Notes of such series may be issued under the Base Indenture as supplemented either by the Supplemental Indenture for such series of Notes or one or more other supplemental indentures. The 2026 Original Notes issued by the Issuer in an aggregate principal amount of $800,000,000 on May 13, 2021, the 2029 Original Notes issued by the Issuer in an aggregate principal amount of $1,100,000,000 on May 13, 2021, and the 2031 Original Notes issued by the Issuer in an aggregate principal amount of $1,100,000,000 on May 13, 2021, constitute additional Notes of the applicable series under the Indenture. Any issuance of additional Notes is subject to all of the covenants in the Indenture including the covenant described below under the caption “—Certain Covenants—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock.” The Notes of any series and any additional Notes of such series subsequently issued, together with any Exchange Notes issued with respect to such series in accordance with the Registration Rights Agreement, will be treated as a single series for all purposes under the Indenture, including, without limitation, waivers, amendments, redemptions and offers to purchase; provided that any additional Notes that

are not fungible with the Notes of any series (or with any other additional Notes of that series) for U.S. federal income tax purposes will have a separate CUSIP, ISIN, common code or other identifying number, as applicable.

The Issuer issued the Original Notes, and will issue the Exchange Notes, in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof.

The 2026 Notes will mature on February 15, 2026, the 2029 Notes will mature on April 15, 2029, and the 2031 Notes will mature on April 15, 2031.

Interest on the Notes will accrue from the date of original issuance or, if interest has already been paid, from the date it was most recently paid (and, in the case of Exchange Notes, interest will accrue from the date of original issuance or, if interest has already been paid on the corresponding Original Notes exchanged therefor, the date it was most recently paid on such Original Notes). If an interest payment date or the maturity date falls on a day that is not a Business Day, the related payment of principal or interest will be made on the next succeeding Business Day as if made on the date the payment was due, and no interest shall accrue for the intervening period. Interest on the Original Notes is, and interest on the Exchange Notes will be, computed on the basis of a 360-day year consisting of twelve 30-day months.

Interest on the 2026 Original Notes accrues, and interest on the 2026 Exchange Notes will accrue, at the rate of 2.250% per annum; interest on the 2029 Original Notes accrues, and interest on the 2029 Exchange Notes will accrue, at the rate of 3.375% per annum; and interest on the 2031 Original Notes accrues, and interest on the 2031 Exchange Notes will accrue, at the rate of 3.500% per annum.

Interest on the 2026 Original Notes is, and interest on the 2026 Exchange Notes will be, payable semiannually in arrears on February 15 and August 15. The Issuer will make each interest payment to the holders of record of the 2026 Notes on the immediately preceding February 1 or August 1 (whether or not a Business Day). Interest on the 2029 Original Notes and the 2031 Original Notes is, and interest on the 2029 Exchange Notes and the 2031 Exchange Notes will be, payable semiannually in arrears on April 15 and October 15. The Issuer will make each interest payment to the holders of record of the 2029 Notes and the 2031 Notes on the immediately preceding April 1 or October 1 (whether or not a Business Day).

Payments of principal of and interest on the Notes issued in book-entry form or definitive form, if any, will be made as described below under the caption “—Methods of Receiving Payments on the Notes.”

The Original Notes of each series are, and the Exchange Notes of each series initially will be, evidenced by one or more global notes deposited with a custodian for, and registered in the name of, Cede & Co., as nominee of The Depository Trust Company (“DTC”).

The Notes are not, and the Issuer does not intend to apply for the Notes to be, listed on any securities exchange or to arrange for the Notes to be quoted on any quotation system.

If a holder of a definitive note has given wire transfer instructions to the Issuer and the Issuer is the paying agent, the Issuer will pay all principal, interest and premium, if any, on that holder’s Notes in accordance with those instructions until given written notice to the contrary. All other payments on the Notes will be made at the Corporate Trust Office of the Trustee, unless the Issuer elects to make interest payments by check mailed to the noteholders at their address set forth in the books and records of the registrar.

The Trustee will initially act as paying agent, registrar and transfer agent where Notes may be presented for payment. The Issuer may change the paying agent, registrar or transfer agent without prior notice to the holders of the Notes, and the Issuer or any of its Subsidiaries may act as paying agent or registrar.

Except as set forth below, the global notes may be transferred, in whole and not in part, only to another nominee of DTC or to a successor of DTC or its nominee.

A holder of a definitive note may transfer or exchange Notes in accordance with the provisions of the Indenture. The registrar and the Trustee may require a holder, among other things, to furnish appropriate endorsements and transfer documents in connection with a transfer of Notes. Holders will be required to pay all taxes relating to, arising out of, or in connection with such transfer. The Issuer will not be required to transfer or exchange any Note selected for redemption. Also, the Issuer will not be required to transfer or exchange any Note for a period of 15 days before a selection of Notes to be redeemed.

The Issuer will not be required to make any mandatory redemption or sinking fund payments with respect to the Notes. However, under certain circumstances, the Issuer may be required to offer to purchase Notes as described below under the caption “—Repurchase at the Option of Holders.”

As market conditions warrant, the Issuer and its affiliates may from time to time seek to purchase their outstanding debt securities or loans, including the Notes, in privately negotiated or open market transactions, by tender offer or otherwise. Subject to any applicable limitations contained in the agreements governing such indebtedness, any purchases made by the Issuer may be funded by the use of cash on its balance sheet or the incurrence of new secured or unsecured debt, including borrowings under credit facilities. The amounts involved in any such purchase transactions, individually or in the aggregate, may be material. Any such purchases may be with respect to a substantial amount of a particular class or series of debt, with the attendant reduction in the trading liquidity of such class or series.

At any time prior to February 15, 2023, the Issuer may on any one or more occasions redeem up to 40% of the aggregate principal amount of the 2026 Notes issued under the applicable Indenture, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 102.250% of the principal amount of 2026 Notes redeemed plus accrued and unpaid interest, if any, thereon to, but not including, the applicable redemption date, subject to the rights of holders of 2026 Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date, with an amount equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of the Issuer or contributions to the Issuer’s common equity capital made with an amount equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of Parent; provided that:

On or after February 15, 2023, the Issuer may redeem all or a part of the 2026 Notes, upon not less than 10 nor more than 60 days’ notice, at the redemption prices (expressed as percentages of the principal amount of 2026 Notes redeemed) set forth below plus accrued and unpaid interest, if any, on the 2026 Notes redeemed to, but not including, the applicable redemption date, if redeemed during the twelve month period beginning on February 15 of the years indicated below, subject to the rights of holders of 2026 Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date:

At any time prior to February 15, 2023, the Issuer may also redeem all or a part of the 2026 Notes, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 100% of the principal amount of 2026 Notes redeemed plus the Applicable Premium for the 2026 Notes as of, and accrued and unpaid interest, if any, to, but not including, the redemption date, subject to the rights of holders of 2026 Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date.

Unless the Issuer defaults in the payment of the redemption price, interest will cease to accrue on the 2026 Notes or portions thereof called for redemption on the redemption date.

At any time prior to April 15, 2024, the Issuer may on any one or more occasions redeem up to 40% of the aggregate principal amount of the 2029 Notes issued under the applicable Indenture, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 103.375% of the principal amount of 2029 Notes redeemed plus accrued and unpaid interest, if any, thereon to, but not including, the applicable redemption date, subject to the rights of holders of 2029 Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date, with an amount equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of the Issuer or contributions to the Issuer’s common equity capital made with an amount equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of Parent; provided that:

On or after April 15, 2024, the Issuer may redeem all or a part of the 2029 Notes, upon not less than 10 nor more than 60 days’ notice, at the redemption prices (expressed as percentages of the principal amount of 2029 Notes redeemed) set forth below plus accrued and unpaid interest, if any, on the 2029 Notes redeemed to, but, not including, the applicable redemption date, if redeemed during the twelve month period beginning on April 15 of the years indicated below, subject to the rights of holders of 2029 Notes on the relevant record date to receive interest on the relevant interest payment date for periods prior to such redemption date:

At any time prior to April 15, 2024, the Issuer may also redeem all or a part of the 2029 Notes, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 100% of the principal amount of 2029 Notes redeemed plus the Applicable Premium for the 2029 Notes as of, and accrued and unpaid interest, if any, to, but not including, the redemption date, subject to the rights of holders of 2029 Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date.

Unless the Issuer defaults in the payment of the redemption price, interest will cease to accrue on the 2029 Notes or portions thereof called for redemption on the redemption date.

At any time prior to April 15, 2024, the Issuer may on any one or more occasions redeem up to 40% of the aggregate principal amount of the 2031 Notes issued under the applicable Indenture, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 103.500% of the principal amount of 2031 Notes redeemed plus accrued and unpaid interest, if any, thereon to, but not including, the applicable redemption date, subject to the rights of holders of 2031 Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date, with an amount equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of the Issuer or contributions to the Issuer’s common equity capital made with an amount equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of Parent; provided that:

On or after April 15, 2026, the Issuer may redeem all or a part of the 2031 Notes, upon not less than 10 nor more than 60 days’ notice, at the redemption prices (expressed as percentages of the principal amount of 2031 Notes redeemed) set forth below plus accrued and unpaid interest, if any, on the 2031 Notes redeemed to, but, not including, the applicable redemption date, if redeemed during the twelve month period beginning on April 15 of the years indicated below, subject to the rights of holders of 2031 Notes on the relevant record date to receive interest on the relevant interest payment date for periods prior to such redemption date:

At any time prior to April 15, 2026, the Issuer may also redeem all or a part of the 2031 Notes, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 100% of the principal amount of 2031 Notes redeemed plus the Applicable Premium for the 2031 Notes as of, and accrued and unpaid interest, if any, to, but not including, the redemption date, subject to the rights of holders of 2031 Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date.

Unless the Issuer defaults in the payment of the redemption price, interest will cease to accrue on the 2031 Notes or portions thereof called for redemption on the redemption date.

For the avoidance of doubt, the requirement to pay any Applicable Premium shall not arise in connection with any recovery of amounts due as a result of any breach of any covenant contained in the Indenture or the applicable Notes except where the transaction resulting in such breach was consummated with the intent to breach such covenant.

Under New York’s statute of limitations, any legal action to enforce our payment obligations evidenced by the Notes must be commenced within six years after the payment thereof is due; thereafter our payment obligations will generally become unenforceable. In addition, the Indenture will prohibit the Trustee and the holders from accelerating the obligations under the Notes with respect to or as a result of an Event of Default consisting of any action taken, and reported publicly or to holders of Notes, more than two years prior to the declaration of such acceleration.

If a Change of Control Triggering Event occurs with respect to any series of Notes, each holder of outstanding Notes of such series will have the right to require the Issuer to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess thereof) of that holder’s Notes of such series pursuant to a Change of Control Offer on the terms set forth in the Indenture. In the Change of Control Offer, the Issuer will offer a Change of Control Payment in cash equal to 101% of the aggregate principal amount of Notes repurchased plus accrued and unpaid interest, if any, on the Notes repurchased to, but not including, the date of purchase, subject to the rights of holders of Notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such repurchase date (the “Change of Control Payment”). Within 30 days following any Change of Control Triggering Event, the Issuer will send a notice (the “Change of Control Offer”) to each holder of Notes to which such Change of Control Triggering Event applies and the Trustee describing the transaction or transactions and identifying the rating decline that together constitute the Change of Control Triggering Event and offering to repurchase the Notes of such series on the Change of Control Payment Date specified in the notice, which date will be no earlier than 10 days and no later than 60 days from the date such notice is sent (the “Change of Control Payment Date”), pursuant to the procedures required by the Indenture and described in such notice. The Issuer will comply with the requirements of Rule 14e-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection

with the repurchase of the Notes as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Triggering Event provisions of the Indenture, or compliance with the Change of Control Triggering Event provisions of the Indenture would constitute a violation of any such laws or regulations, the Issuer will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Triggering Event provisions of the Indenture by virtue of such compliance. In connection with the tender of any Notes with respect to a Change of Control Triggering Event, the tendering holder shall provide good title to the Notes, free and clear of all liens and encumbrances, and shall represent and warrant that such holder is presenting good title, free and clear of all liens and encumbrances, and such other representations and warranties as are customary.

On the Change of Control Payment Date, the Issuer will, to the extent lawful:

The paying agent will promptly make payment, to each holder of Notes properly tendered, of the Change of Control Payment for such Notes, and the Trustee will promptly authenticate and mail (or cause to be transferred by book entry) to each holder, a new Note equal in principal amount to any unpurchased portion of the Notes surrendered, if any; provided that each new Note will be in a principal amount equal to $2,000 or an integral multiple of $1,000 in excess thereof. The Issuer will publicly announce the results of the Change of Control Offer on or as soon as practicable after the Change of Control Payment Date.

The provisions described above that require the Issuer to make a Change of Control Offer following a Change of Control Triggering Event will be applicable whether or not any other provisions of the Indenture are applicable. Except as described above with respect to a Change of Control Triggering Event, the Indenture does not contain provisions that permit the holders of the Notes to require, or otherwise provide, that the Issuer repurchase or redeem the Notes in the event of a takeover, recapitalization or similar transaction.

Notwithstanding the foregoing, the Issuer will not be required to make a Change of Control Offer with respect to any series of the Notes upon a Change of Control Triggering Event if (1) a third party makes the Change of Control Offer for such series of Notes in the manner, at the times and otherwise in compliance with the requirements set forth in the Indenture applicable to a Change of Control Offer made by the Issuer and purchases all Notes of such series properly tendered and not withdrawn under the Change of Control Offer, or (2) notice of redemption with respect to such series has been given pursuant to the Indenture as described above under the caption “—Optional Redemption,” unless and until there is a default in payment of the applicable redemption price.

A Change of Control Offer may be made in advance of a Change of Control Triggering Event, and conditioned upon such Change of Control Triggering Event, if a definitive agreement has been executed for a transaction that would constitute a Change of Control at the time of making of the Change of Control Offer.

In the event that holders of not less than 90% of the aggregate principal amount of the outstanding Notes of a series accept a Change of Control Offer and the Issuer purchases all of the Notes of such series held by such holders, the Issuer will have the right, upon not less than 10 nor more than 60 days’ notice, given not more than 30 days following the purchase pursuant to the Change of Control Offer described above, to redeem all of the Notes of such series that remain outstanding following such purchase at a redemption price equal to the Change of Control Payment plus, to the extent not included in the Change of Control Payment, accrued and unpaid interest, if any, on the Notes of such series that remain outstanding, to, but not including, the date of redemption (subject to the right of holders of record on the relevant record date to receive interest due on an interest payment date that is on or prior to the redemption date).

The definition of Change of Control includes a phrase relating to the direct or indirect sale, lease, transfer, conveyance or other disposition of “all or substantially all” of the properties or assets of, prior to the occurrence of an Investment Grade Event Election, the Issuer and its Restricted Subsidiaries taken as a whole, and following the

occurrence of an Investment Grade Event Election, Parent and its Subsidiaries taken as a whole. Although there is a limited body of case law interpreting the phrase “substantially all,” there is no precise established definition of the phrase under applicable law. Accordingly, the ability of a holder of Notes to require the Issuer to repurchase its Notes as a result of a sale, lease, transfer, conveyance or other disposition of less than all of the assets of the Issuer and its Restricted Subsidiaries taken as a whole to another Person or group may be uncertain.

The Issuer will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless:

Notwithstanding the foregoing, the 75% limitation referred to above shall be deemed satisfied with respect to any Asset Sale in which the cash, Cash Equivalents or Replacement Assets portion of the consideration received therefrom, determined in accordance with the foregoing provision on an after-tax basis, is equal to or greater than what the after-tax proceeds would have been had such Asset Sale complied with the aforementioned 75% limitation.

Within 365 days after the receipt of any Net Proceeds from an Asset Sale, the Issuer or a Restricted Subsidiary may apply an amount equal to such Net Proceeds:

Notwithstanding the foregoing, if within 365 days after the receipt of any Net Proceeds from an Asset Sale, the Issuer or a Restricted Subsidiary enters into a binding written agreement committing the Issuer or such Restricted Subsidiary, subject to customary conditions, to an application of funds of the kind described in clause (1) above, the Issuer or such Restricted Subsidiary shall be deemed not to be in violation of the preceding paragraph so long as such application of funds is consummated within 545 days of the receipt of such Net Proceeds.

Pending the final application of any Net Proceeds of an Asset Sale, the Issuer may temporarily reduce revolving credit borrowings or otherwise use the Net Proceeds in any manner that is not prohibited by the Indenture.

An amount equal to any Net Proceeds from Asset Sales that are not applied or invested as provided in the third paragraph of this covenant will constitute “Excess Proceeds.” When the aggregate amount of Excess Proceeds exceeds $100.0 million, within 20 days thereof, the Issuer shall apply the entire aggregate amount of unutilized Excess Proceeds (not only the amount in excess of $100.0 million) to make an offer (an “Asset Sale Offer”) to all holders of Notes and all holders of other Indebtedness that is pari passu with the Notes containing provisions requiring the Issuer to make an offer to purchase or redeem with the proceeds of sales of assets to purchase the maximum principal amount of Notes and purchase or redeem such other pari passu Indebtedness that may be purchased or redeemed out of the Excess Proceeds. The offer price in any Asset Sale Offer will be equal to 100% of the principal amount of the Notes and such other pari passu Indebtedness that may be purchased or redeemed with Excess Proceeds, plus accrued and unpaid interest, if any, to, but not including, the date of consummation of the purchase, and will be payable in cash. If any Excess Proceeds remain after consummation of an Asset Sale Offer, the Issuer and its Restricted Subsidiaries may use those Excess Proceeds for any purpose not otherwise prohibited by the Indenture. If the aggregate principal amount of Notes and other pari passu Indebtedness tendered in response to such Asset Sale Offer exceeds the amount of Excess Proceeds, the Trustee shall select the Notes and the Issuer will select such other pari passu Indebtedness to be purchased or redeemed on a pro rata basis unless otherwise required by law or applicable stock exchange or depositary requirements. Upon completion of each Asset Sale Offer, the amount of Excess Proceeds will be reset at zero.

The Issuer will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with each repurchase of Notes pursuant to an Asset Sale Offer. To the extent that the provisions of any securities laws or regulations conflict with the Asset Sale provisions of the Indenture, or compliance with the Asset Sale provisions of the Indenture would constitute a violation of any such laws or regulations, the Issuer will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Asset Sale provisions of the Indenture by virtue of such compliance.

The agreements governing the Issuer’s other Indebtedness contain, and future agreements may contain, prohibitions of certain events, including events that would constitute a Change of Control or an Asset Sale and may prohibit repurchases of or other prepayments in respect of the Notes. The exercise by the holders of the Notes of their right to require the Issuer to repurchase the Notes upon a Change of Control Triggering Event or an Asset Sale could cause a default under these other agreements, even if the Change of Control Triggering Event or Asset Sale itself does not, due to the financial effect of such repurchases or other prepayments on the Issuer. In the event a Change of Control Triggering Event or Asset Sale occurs at a time when the Issuer is prohibited from purchasing Notes, the Issuer could seek the consent of the holders of such Indebtedness to the purchase of Notes or could attempt to refinance the borrowings that contain such prohibition. If the Issuer does not obtain a consent or repay those borrowings, the Issuer will remain prohibited from purchasing Notes. In that case, the Issuer’s failure to purchase tendered Notes would constitute an Event of Default under the applicable Indenture that could, in turn, constitute a default under the other Indebtedness. Finally, the Issuer’s ability to pay cash to the holders of Notes upon a repurchase may be limited by the Issuer’s then existing financial resources. See “Risk Factors—Risks Related to the Notes—The

indentures governing the Notes, the Outstanding T-Mobile Secured Notes, the other Existing T-Mobile Unsecured Notes and the Existing Sprint Unsecured Notes, the Credit Agreement and other financing arrangements include or will include restrictive covenants that limit our operating flexibility.”

If less than all of the Notes of a series are to be redeemed, the Trustee will select Notes of such series for redemption on a pro rata basis unless otherwise required by law or applicable stock exchange or depositary requirements.

No Notes of $2,000 or less can be redeemed in part. Notices of redemption will be sent electronically or mailed by first class mail at least 10 but not more than 60 days before the redemption date to each holder of Notes to be redeemed at its registered address, except that redemption notices may be sent more than 60 days prior to a redemption date if the notice is issued in connection with a defeasance of the Notes of a series or a satisfaction and discharge of the Indenture with respect to such series. Any such notice of redemption may, at the Issuer’s discretion, state that such redemption is subject to one or more conditions precedent, including, but not limited to, completion of an equity offering, other offering, issuance of Indebtedness or other corporate transaction or event. In addition, if such redemption or notice is subject to satisfaction of one or more conditions precedent, such notice shall state that, in the Issuer’s discretion, the redemption date may be delayed until such time as any or all such conditions shall be satisfied (or waived by the Issuer in its sole discretion), or such redemption may not occur and such notice may be rescinded in the event that any or all such conditions shall not have been satisfied (or waived by the Issuer in its sole discretion) by the redemption date (whether the original redemption date or the redemption date so delayed). In addition, the Issuer may provide in such notice or offer to purchase that payment of the redemption or purchase price and performance of the Issuer’s obligations with respect to such redemption or offer to purchase may be performed by another Person.

If any Note is to be redeemed in part only, the notice of redemption that relates to that Note will state the portion of the principal amount of that Note that is to be redeemed. If in definitive form a new Note in principal amount equal to the unredeemed portion of the original Note will be issued in the name of the holder of Notes upon cancellation of the original note. Except to the extent that a notice of redemption is conditional, Notes called for redemption become due on the date fixed for redemption. On and after the redemption date, interest ceases to accrue on Notes or portions of Notes called for redemption.

If on any date following the Series Issue Date with respect to a series of Notes:

then, beginning on that day, the covenants specifically listed under the following captions in this prospectus will cease to apply to such series of Notes and will not be later reinstated even if the ratings of the Notes of such series should subsequently decline:

There can be no assurance that the Notes of any series will ever achieve an Investment Grade rating.

The Issuer will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly:

unless, at the time of and after giving effect to such Restricted Payment:

As of March 31, 2022, the amount calculated pursuant to clause (c)(i)-(vii) above, was approximately $137.1 billion.

The preceding provisions will not prohibit:

For purposes of determining compliance with this “Restricted Payments” covenant, in the event that an Investment or Restricted Payment meets the criteria of more than one of the categories described in clauses (1) through (17) above or one or more of the exceptions contained in the definition of “Permitted Investments”, the Issuer will be permitted to classify all or a portion of such Investment or Restricted Payment on the date of its occurrence, or later reclassify all or a portion of such Investment or Restricted Payment, in any manner that complies with this covenant.

The amount of all Restricted Payments (other than cash) will be the Fair Market Value on the date of the Restricted Payment of the asset(s) or securities proposed to be transferred or issued by the Issuer or such Restricted Subsidiary, as the case may be, pursuant to the Restricted Payment.

The Issuer will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue, assume, guarantee or otherwise become directly or indirectly liable, contingently or otherwise, with respect to (collectively, “incur”) any Indebtedness (including Acquired Debt), and the Issuer will not issue any Disqualified Stock and will not permit any of its Restricted Subsidiaries to issue any shares of Preferred Stock; provided, however, that the Issuer may incur Indebtedness (including Acquired Debt) or issue Disqualified Stock and the Subsidiary Guarantors may incur Indebtedness (including Acquired Debt) or issue Preferred Stock, if the Debt to Cash Flow Ratio for the Issuer’s most recently ended four full fiscal quarters for which internal financial statements are available immediately preceding the date on which such additional Indebtedness is incurred or such Disqualified Stock or such Preferred Stock is issued, as the case may be, would have been no greater than 6.00 to 1.00, determined on a pro forma basis (including a pro forma application of the net proceeds therefrom), as if the additional Indebtedness had been incurred or the Disqualified Stock or the Preferred Stock had been issued, as the case may be, at the beginning of such four-quarter period.

The first paragraph of this covenant will not prohibit the incurrence of any of the following items of Indebtedness (collectively, “Permitted Debt”), nor will it prohibit the Issuer from issuing the following types of Disqualified Stock or the Issuer’s Restricted Subsidiaries from issuing the following types of Preferred Stock:

For purposes of (x) determining compliance with this “Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock” covenant, in the event that an item of proposed Indebtedness meets the criteria of more than one of the categories of Permitted Debt described in clauses (1) through (25) above, or is entitled to be incurred pursuant to the first paragraph of this covenant, the Issuer will be permitted to classify all or a portion of such item of Indebtedness on the date of its incurrence, or later reclassify all or a portion of such item of Indebtedness, in any manner that complies with this covenant; and (y) determining the amount of Indebtedness that may be incurred pursuant to clause (1)(B)(ii) of the definition of Permitted Debt, the Issuer may elect, pursuant to an officers’ certificate delivered to the Trustee, to treat all or any portion of the commitment under any Indebtedness (and any refinancing with respect thereto) as being incurred at such time, in which case any subsequent incurrence of Indebtedness under such commitment or refinancing, as the case may be, shall not be deemed, for purposes of this calculation, to be an incurrence at such subsequent time. The accrual of interest, the accretion or amortization of original issue discount, the payment of interest on any Indebtedness in the form of additional Indebtedness with the same terms, the reclassification of Preferred Stock as Indebtedness due to a change in accounting principles or the application thereof, and the payment of dividends on Disqualified Stock in the form of additional shares of the same class of Disqualified Stock will not be deemed to be an incurrence of Indebtedness or an issuance of Disqualified Stock for purposes of this covenant. Notwithstanding any other provision of this covenant, the maximum amount of Indebtedness that the Issuer or any Restricted Subsidiary may incur pursuant to this covenant shall not be deemed to be exceeded solely as a result of fluctuations in exchange rates or currency values, and in no event shall the reclassification of any lease or other liability as indebtedness due to a change in accounting principles after the Closing Date be deemed to be an incurrence of Indebtedness. In determining the amount of Indebtedness outstanding under one of the clauses above, the outstanding principal amount of any particular Indebtedness of any Person shall be counted only once and any obligation of such Person or any other Person arising under any guarantee, Lien, letter of credit or similar instrument supporting such Indebtedness shall be disregarded so long as it is permitted to be incurred by the Person or Persons incurring such obligation.

Prior to the occurrence of an Investment Grade Event Election, the Issuer will not, and will not permit any Guarantor to, directly or indirectly, create, incur or assume any Lien securing Indebtedness upon any asset now owned or hereafter acquired, except Permitted Liens, unless the Notes are equally and ratably secured (except that Liens securing Indebtedness that is contractually subordinated to the Notes shall be expressly subordinate to any Lien securing the Notes to at least the same extent that such Indebtedness is subordinate to the Notes).

Following the occurrence of an Investment Grade Event Election, the Issuer will not, and will not permit any Material Subsidiary to, directly or indirectly, create, incur or assume any Lien securing Indebtedness for Borrowed

Money upon any of its or any Material Subsidiary’s Principal Property or upon Capital Stock or Specified Indebtedness of any Material Subsidiary that directly owns any Principal Property, except Permitted Post-IG Event Election Liens, unless the Notes are equally and ratably secured with (or, at the Issuer’s option, on a senior basis to) the Indebtedness for Borrowed Money so secured. Any Lien created for the benefit of the holders of the Notes pursuant to this paragraph is required to provide by its terms that such Lien shall be automatically and unconditionally released and discharged upon the release and discharge of the Lien that gave rise to such Lien created for the benefit of the holders of the Notes.

For purposes of determining compliance with this “Liens” covenant, (x) a Lien need not be incurred solely by reference to one category of Permitted Liens or Permitted Post-IG Event Election Liens, as applicable, but may be incurred under any combination of such categories (including in part under one such category and in part under any other such category) and (y) in the event that a Lien (or any portion thereof) meets the criteria of one or more of such categories of Permitted Liens or Permitted Post-IG Event Election Liens, as applicable, the Issuer shall, in its sole discretion, divide, classify or may subsequently reclassify at any time such Lien (or any portion thereof) in any manner that complies with this “Liens” covenant and the definition of “Permitted Liens” or “Permitted Post-IG Event Election Liens,” as applicable.

The Issuer will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create or permit to exist or become effective any consensual encumbrance or restriction on the ability of any Restricted Subsidiary to:

However, the preceding restrictions will not apply to encumbrances or restrictions existing under or by reason of:

The Issuer will not: (1) consolidate or merge with or into another Person (whether or not the Issuer is the surviving corporation); or (2) directly or indirectly sell, assign, lease, transfer, convey or otherwise dispose of (including, in each case, by way of division) all or substantially all of the properties and assets of the Issuer and its Restricted Subsidiaries taken as a whole (prior to the occurrence of an Investment Grade Event Election) or the Issuer and its Subsidiaries taken as a whole (following the occurrence of an Investment Grade Event Election), in one or more related transactions, to another Person, unless:

Upon any consolidation or merger, or any sale, assignment, lease, transfer, conveyance or other disposition of all or substantially all of the properties and assets of the Issuer and its Restricted Subsidiaries (prior to the occurrence of an Investment Grade Event Election) or the Issuer and its Subsidiaries (following the occurrence of an Investment Grade Event Election), in each case taken as a whole, in a transaction that is subject to, and that complies with the provisions of, this “Merger, Consolidation or Sale of Assets” covenant, the successor Person formed by such consolidation or into or with which the Issuer is merged or to which such sale, assignment, lease, transfer, conveyance or other disposition is made, shall succeed to, and be substituted for the Issuer (so that from and after the date of such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition, the provisions of the Indenture referring to the “Issuer” shall refer instead to the successor Person and not to the Issuer), and may exercise every right and power of the Issuer under the Indenture with the same effect as if such successor Person had been named as the Issuer therein. When the successor Person assumes all of the Issuer’s obligations under the Indenture, the Issuer shall be discharged from those obligations.

This “Merger, Consolidation or Sale of Assets” covenant will not apply to (and the following shall be permitted notwithstanding such covenant):

The Issuer will not, and will not permit any of its Restricted Subsidiaries to, make any payment to, or sell, lease, transfer or otherwise dispose of any of its properties or assets to, or purchase any property or assets from, or enter into or make or amend any transaction, contract, agreement, understanding, loan, advance or guarantee with, or for the benefit of, any Affiliate of the Issuer (each, an “Affiliate Transaction”), in any one or series of related transactions involving aggregate payments or consideration in excess of $50.0 million, unless:

The following items will not be deemed to be Affiliate Transactions and, therefore, will not be subject to the provisions of the prior paragraph:

Prior to the occurrence of an Investment Grade Event Election with respect to each series of Notes, if (a) any Wholly-Owned Subsidiary of the Issuer that is not an Excluded Subsidiary becomes an obligor with respect to any Indebtedness under the Credit Agreement, (b) any Wholly-Owned Subsidiary of the Issuer that is not an Excluded Subsidiary and that is not an Unrestricted Subsidiary becomes an obligor with respect to any capital markets debt securities in an aggregate principal amount in excess of $500.0 million or (c) Parent or any Subsidiary of Parent acquires or creates a Subsidiary that directly or indirectly owns Capital Stock of the Issuer, then the Issuer or Parent, as applicable, will, within 20 Business Days after the date on which it becomes an obligor with respect to any of the foregoing, or reasonably promptly thereafter, (i) cause that newly acquired or created Subsidiary to become a Guarantor of the Notes and execute a supplemental indenture and (ii), if requested by the Trustee, deliver an opinion of counsel reasonably satisfactory to the Trustee.

Following the occurrence of an Investment Grade Event Election, with respect to each series of Notes, if the aggregate principal amount of Indebtedness for Borrowed Money of non-guarantor Subsidiaries that are not Excluded Subsidiaries (excluding any Specified Indebtedness under any Permitted Receivables Financing and any Specified Indebtedness of an “Unrestricted Subsidiary” (or the equivalent thereof) under the Credit Agreement or Permitted Receivables Financing Subsidiary) that is incurred or issued and outstanding exceeds $2,000.0 million

(the “Guarantee Threshold”), then Parent shall cause such of its non-guarantor Subsidiaries that are not Excluded Subsidiaries to, within 60 days, execute and deliver a supplemental indenture providing for a Note Guarantee by such non-guarantor Subsidiaries (each such Note Guarantee, a “Post-Release Event Note Guarantee”) such that the aggregate principal amount of Specified Indebtedness of all other non-guarantor Subsidiaries that are not Excluded Subsidiaries (excluding any Specified Indebtedness under any Permitted Receivables Financing and any Specified Indebtedness of an “Unrestricted Subsidiary” (or the equivalent thereof) under the Credit Agreement or Permitted Receivables Financing Subsidiary) that is incurred or issued and outstanding does not exceed the Guarantee Threshold (after giving effect to the provision of Post-Release Event Note Guarantees pursuant to the foregoing); provided that (i) this covenant shall not be applicable to any Specified Indebtedness of any Subsidiary that existed at the time such Person became a Subsidiary of Parent (including any Specified Indebtedness incurred in connection with, or in contemplation of, such Person becoming a Subsidiary, so long as Parent and its Subsidiaries (other than such Person and its Subsidiaries) are not obligors under such Specified Indebtedness), (ii) if the Guarantee Threshold would be exceeded immediately after giving effect to the occurrence of an Investment Grade Event Election, then such Investment Grade Event Election shall be deemed not to have occurred with respect to the release of such Note Guarantees as the Issuer may designate such that the Guarantee Threshold would not be then exceeded and (iii) a Post-Release Event Note Guarantee shall be released to the extent the Guarantee Threshold would not be exceeded after giving effect to such release.

The Board of Directors of the Issuer may designate any Restricted Subsidiary to be an Unrestricted Subsidiary if that designation would not cause a Default. If a Restricted Subsidiary is designated as an Unrestricted Subsidiary, (i) the aggregate Fair Market Value of all outstanding Investments owned by the Issuer and its Restricted Subsidiaries in the Subsidiary designated as an Unrestricted Subsidiary will be deemed to be an Investment made as of the time of the designation and will reduce the amount available for Restricted Payments under the covenant described above under the caption “—Restricted Payments” or under one or more clauses of the definition of Permitted Investments, as determined by the Issuer in its discretion, and (ii) any Guarantee by the Issuer or any Restricted Subsidiary thereof of any Indebtedness of the Restricted Subsidiary being so designated will be deemed to be an incurrence of Indebtedness by the Issuer or such Restricted Subsidiary (or both, if applicable) at the time of such designation. That designation will only be permitted if the Investment and/or incurrence of Indebtedness would be permitted at that time and if the Restricted Subsidiary otherwise meets the definition of an Unrestricted Subsidiary. The Board of Directors of the Issuer may redesignate any Unrestricted Subsidiary to be a Restricted Subsidiary if that redesignation would not cause a Default.

Any designation of a Subsidiary of the Issuer as an Unrestricted Subsidiary will be evidenced to the Trustee by filing with the Trustee a certified copy of a resolution of the Board of Directors giving effect to such designation and an officers’ certificate certifying that such designation complied with the preceding conditions and was permitted by the covenant described above under the caption “—Restricted Payments.” The Board of Directors of the Issuer may at any time designate any Unrestricted Subsidiary to be a Restricted Subsidiary of the Issuer; provided that such designation will be deemed to be an incurrence of Indebtedness by a Restricted Subsidiary of the Issuer of any outstanding Indebtedness of such Unrestricted Subsidiary, and such designation will only be permitted if (1) such Indebtedness is permitted under the covenant described under the caption “—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock,” calculated on a pro forma basis as if such designation had occurred at the beginning of the four-quarter reference period; and (2) no Default would be in existence following such designation, and as a result of, such designation.

Notwithstanding the foregoing, the Issuer may at any time and from time to time designate any Designated Entity, by written notice to the Trustee, as an Unrestricted Subsidiary, and any such Subsidiary shall upon such notice immediately be designated and deemed an Unrestricted Subsidiary, without any further action by the Issuer (and, for the avoidance of doubt, shall not require delivery of a resolution of the Board of Directors or of an officers’ certificate) (each, a “Specified Unrestricted Subsidiary Designation”). The aggregate Fair Market Value of all outstanding Investments owned by the Issuer and its Restricted Subsidiaries in such Designated Entities so designated as Unrestricted Subsidiaries will, as calculated and to the extent permitted by clause (18) of the definition of Permitted Investments, be deemed to be an Investment made as of the time of such Specified Unrestricted Subsidiary Designation under such clause (18), and not reduce the amount available for Restricted Payments under the covenant described above under the caption “—Restricted Payments.”

Whether or not required by the rules and regulations of the SEC, so long as any Notes are outstanding, Parent will file a copy of each of the reports referred to in clauses (1) and (2) below with the SEC for public availability within the time periods (including all applicable extension periods) specified in the SEC rules and regulations applicable to such reports (unless the SEC will not accept such a filing):

All such reports will be prepared in all material respects in accordance with all of the rules and regulations applicable to such reports; provided that, if Parent is not required under the rules and regulations of the SEC to file such reports with the SEC for public availability, such reports need not be prepared in accordance with all of the rules and regulations applicable to such reports and shall only be required to include the information or disclosure that would be required by such form to the extent that, and in the same general style of presentation as the prospectus supplement for the Existing Registered 2026 Notes, the Existing Registered 2029 Notes and the Existing Registered 2031 Notes, filed with the SEC on March 18, 2021. The Issuer will comply with §314(a) of the Trust Indenture Act.

If the SEC will not accept Parent’s filings for any reason, the Issuer will post the reports referred to in the preceding paragraphs on its website, on intralinks.com or another website within the time periods that would apply if Parent were required to file those reports with the SEC (including all applicable extension periods). If the combined operations of Parent and its Subsidiaries, excluding the operations of the Issuer and its Subsidiaries and excluding Specified Cash Equivalents, would, if held by a single Subsidiary of the Issuer, constitute a Significant Subsidiary of the Issuer, then the quarterly and annual financial information required by the preceding paragraphs will include a reasonably detailed presentation, either on the face of the financial statements or in the footnotes thereto, and in Management’s Discussion and Analysis of Financial Condition and Results of Operations, of the financial condition and results of operations of the Issuer and its Subsidiaries separate from the financial condition and results of operations of Parent and its other Subsidiaries; provided, however, that the requirements of this paragraph shall not apply if Parent or the Issuer files with the SEC the reports referred to in clauses (1) and (2) of the first paragraph of this covenant, and any such report contains the information required in this paragraph.

Notwithstanding anything herein to the contrary, the Issuer will not be deemed to have failed to comply with any of its obligations hereunder for purposes of clause (4) under “—Events of Default and Remedies” until 150 days after the receipt of the written notice delivered thereunder.

For so long as any Notes remain outstanding, if at any time Parent or the Issuer is not required to file with the SEC the reports required by the preceding paragraphs, the Issuer will furnish to the holders of Notes and to securities analysts and prospective investors, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act.

Any such reports delivered or filed by the Issuer with the Trustee shall be considered for informational purposes only and the Trustee’s receipt of such reports shall not constitute notice or actual knowledge of any information contained therein or determinable from information contained therein, including the Issuer’s compliance with any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively on an officers’ certificate).

Each of the following is an “Event of Default” in respect of the Notes of a series:

In the case of an Event of Default arising from certain events of bankruptcy or insolvency, with respect to (i) prior to the occurrence of an Investment Grade Event, the Issuer, any Restricted Subsidiary of the Issuer that is a Significant Subsidiary or any group of Restricted Subsidiaries of the Issuer that, taken together, would constitute a Significant Subsidiary of the Issuer, or (ii) following the occurrence of an Investment Grade Event, the Issuer, any of its Significant Subsidiaries or any group of Subsidiaries of the Issuer that, taken together, would constitute a Significant Subsidiary of the Issuer; in each case all outstanding Notes of such series will become due and payable immediately without further action or notice. However, the effect of such provisions may be limited by applicable laws. If any other Event of Default occurs and is continuing with respect to any series of Notes, the Trustee or the holders, with a copy to the Trustee, of at least 30% in aggregate principal amount of the then outstanding Notes of such series may declare all the Notes of such series to be due and payable immediately; provided that no such declaration may be made with respect to or as a result of any action taken, and reported publicly or to holders of Notes, more than two years prior to such declaration.

Subject to certain limitations, the holders of a majority in aggregate principal amount of the then outstanding Notes of such series may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from holders of the Notes notice of any continuing Default or Event of Default if it determines that withholding notice is in their interest, except a Default or Event of Default in the payment of interest or premium, if any, on, or the principal of, the Notes of such series.

Subject to the provisions of the Indenture relating to the duties of the Trustee, the Trustee will be under no obligation to exercise any of the rights or powers under the Indenture at the request or direction of any holders of Notes unless such holders have offered to the Trustee indemnity or security satisfactory to it against any loss, liability or expense. Except to enforce the right to receive payment of principal, premium (if any) or interest when due, a holder may pursue a remedy with respect to the Indenture or the Notes of any series only if:

The holders of a majority in aggregate principal amount of the then outstanding Notes of a series by written notice to the Trustee may, on behalf of all holders of Notes of that series, rescind an acceleration or waive any existing Default or Event of Default in respect of such series of Notes and its consequences under the Indenture except a continuing Default or Event of Default in the payment of interest or premium, if any, on, or the principal of, the Notes of such series.

The Issuer and each Guarantor is required to deliver to the Trustee annually a statement regarding compliance with the Indenture. Within 30 days after becoming aware of any Default or Event of Default, the Issuer is required to deliver to the Trustee a statement specifying such Default or Event of Default unless such Default or Event of Default has been cured or waived in such period.

No past, present or future director, officer, member, manager, partner, employee, incorporator or stockholder of the Issuer or any Guarantor, as such, will have any liability for any obligations of the Issuer or the Guarantors under the Notes, the Indenture, the Note Guarantees or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under the federal securities laws and it is the view of the SEC that such a waiver is against public policy.

The Issuer may at any time, at the option of its Board of Directors evidenced by a resolution set forth in an officers’ certificate, elect to have all of its obligations discharged with respect to the outstanding Notes of any series and all obligations of the Guarantors discharged with respect to their Note Guarantees with respect to such series (“Legal Defeasance”) and cure all then existing Defaults and Events of Defaults except for:

In addition, the Issuer may, at its option and at any time with respect to any series of Notes, elect to have the obligations of the Issuer and the Guarantors released with respect to the provisions of the Indenture described above under “—Repurchase at the Option of Holders” and under the caption “—Certain Covenants” (other than the

covenant described under the caption “—Certain Covenants—Merger, Consolidation or Sale of Assets,” except to the extent described below) and the limitation imposed by clause (4) under the caption “—Certain Covenants—Merger, Consolidation or Sale of Assets” (such release and termination being referred to as “Covenant Defeasance”), and thereafter any omission to comply with such obligations or provisions will not constitute a Default or Event of Default with respect to such Notes. In the event Covenant Defeasance occurs with respect to any series of Notes in accordance with the Indenture, the Events of Default described under clauses (3) through (9) under the caption “—Events of Default and Remedies” (in the case of clauses (7) and (8), only with respect to the Issuer’s Subsidiaries) in each case, will no longer constitute an Event of Default.

In order to exercise either Legal Defeasance or Covenant Defeasance with respect to any series of Notes:

Except as provided in the next two succeeding paragraphs, the applicable Indenture with respect to the Notes of any series or the related Note Guarantees of the Notes of any series may be amended or supplemented with the consent of the holders of at least a majority in aggregate principal amount of the Notes of such series then outstanding (including consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes of such series), and any existing Default or Event of Default or compliance with any provision of the applicable Indenture with respect to such Notes or the related Note Guarantees may be waived with the consent of the holders of a majority in aggregate principal amount of the then outstanding Notes of such series (including consents obtained in connection with a purchase of, or tender offer or exchange offer for, the Notes of such series).

Without the consent of each holder of Notes of the applicable series affected, an amendment, supplement or waiver may not (with respect to any Notes of a particular series held by a non-consenting holder):

Notwithstanding the preceding, without the consent of any holder of Notes, the Issuer, the Guarantors, and the Trustee may amend or supplement the applicable Indenture, the Notes of any series or the related Note Guarantees:

The consent of the holders of the Notes is not necessary under the Indenture to approve the particular form of any proposed amendment or waiver. It is sufficient if such consent approves the substance of the proposed amendment or waiver.

For the avoidance of doubt, no amendment to, or deletion of any of the covenants described under, “—Repurchase at the Option of Holders” or “—Certain Covenants,” or action taken in compliance with the covenants in effect at the time of such action, shall be deemed to impair or affect any legal rights of any holders of the Notes to receive payment of principal of or premium, if any, or interest on the Notes to institute suit for the enforcement of any payment on or with respect to such holder’s Notes.

The applicable Indenture will be discharged and will cease to be of further effect as to the Notes of a series issued thereunder, when:

In addition, the Issuer must deliver to the Trustee (a) an officers’ certificate, stating that all conditions precedent set forth in clauses (1) through (3) above have been satisfied, and (b) an opinion of counsel (which opinion of counsel may be subject to customary assumptions, qualifications and exclusions), stating that all conditions precedent set forth in clause (3) above have been satisfied.

The Indenture, the Notes and the Note Guarantees are (with respect to the Original Notes) and will be (with respect to the Exchange Notes) governed by the laws of the State of New York.

We maintain ordinary banking relationships with Deutsche Bank Trust Company Americas and its affiliates.

If the Trustee becomes a creditor of the Issuer or any Guarantor, the Indenture limits the right of the Trustee to obtain payment of claims in certain cases, or to realize on certain property received in respect of any such claim as security or otherwise. The Trustee will be permitted to engage in other transactions; however, if it acquires any conflicting interest when a Default is continuing it must eliminate such conflict within 90 days of the date such conflict arises, apply to the SEC for permission to continue as trustee or resign.

The holders of a majority in aggregate principal amount of the then outstanding Notes of the applicable series will have the right to direct the time, method and place of conducting any proceeding for exercising any remedy available to the Trustee, subject to certain exceptions. The Indenture provides that in case an Event of Default occurs and is continuing, the Trustee will be required, in the exercise of its power, to use the degree of care of a prudent person in the conduct of such person’s own affairs.

Subject to such provisions, the Trustee will be under no obligation to exercise any of its rights or powers under the Indenture at the request of any holder of Notes of the applicable series, unless such holder has offered to the Trustee security and indemnity satisfactory to it against any loss, liability or expense.

Set forth below are certain defined terms used in the applicable Indenture. Reference is made to the Indenture for a full disclosure of all defined terms used therein, as well as any other capitalized terms used herein for which no definition is provided.

“$1.75B Notes” means the $1,750,000,000 in principal amount of MetroPCS Wireless, Inc.’s 6.625% Senior Notes due 2023, issued as of March 19, 2013, pursuant to the Indenture, between MetroPCS Wireless, Inc.’s, MetroPCS, Inc., MetroPCS Communications, Inc., the guarantors party thereto, and Deutsche Bank Trust Company Americas, as supplemented by the First Supplemental Indenture dated March 19, 2013 or the Second Supplemental Indenture dated March 19, 2013 thereto, as applicable, as amended by the Third Supplemental Indenture dated April 29, 2013, as further supplemented by the Fourth Supplemental Indenture dated May 1, 2013, among T-Mobile USA, Inc., the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee, as further supplemented by the Fifth Supplemental Indenture, dated as of July 15, 2013, among T-Mobile USA, Inc., the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee, and as further supplemented by the Sixth Supplemental Indenture, dated as of August 11, 2014, among T-Mobile USA, Inc., the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee (as so supplemented and amended, the “$1.75B Notes Indenture”), (ii) any additional 6.625% Senior Notes due 2023 issued under the $1.75B Notes Indenture as part of the same series, and (iii) any “Exchange Notes” (as defined in the $1.75B Notes Indenture) relating thereto.

“Acquired Debt” means, with respect to any specified Person:

The term “Acquired Debt” does not include Indebtedness of a Person that is redeemed, defeased, retired or otherwise repaid at the time of, or immediately upon, consummation of the transactions by which such Person becomes a Restricted Subsidiary or acquires such asset, as the case may be.

“Affiliate” of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For purposes of this definition, “control,” as used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of such Person, whether through the ownership of voting securities, by agreement or otherwise. For purposes of this definition, the terms “controlling,” “controlled by” and “under common control with” have correlative meanings.

“Applicable Premium,” as calculated by the Issuer and provided to the Trustee, means, with respect to any Note on any redemption date, the greater of:

“Asset Acquisition” means:

For the avoidance of doubt, the Merger shall be deemed to be an Asset Acquisition.

“Asset Disposition” means the sale or other disposition by the Issuer or any of its Restricted Subsidiaries other than to the Issuer or another Restricted Subsidiary of (1) all or substantially all of the Capital Stock owned by the Issuer or any of its Restricted Subsidiaries of any Restricted Subsidiary or any Person that is a Permitted Joint Venture Investment or (2) all or substantially all of the assets that constitute a division, operating unit or line of business of the Issuer or any of its Restricted Subsidiaries.

“Asset Sale” means:

Notwithstanding the preceding, none of the following items will be deemed to be an Asset Sale:

“Asset Sale Offer” has the meaning assigned to that term in the provision described under the caption “—Repurchase at the Option of Holders—Asset Sales.”

“Bankruptcy Code” means the United States Bankruptcy Code (11 U.S.C. Section 1.1 et seq.), as amended from time to time.

“Bankruptcy Law” means the Bankruptcy Code or any similar federal, state or foreign law for the relief of debtors.

“Beneficial Owner” has the meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that (a) in calculating the Beneficial Ownership of any particular “person” (as such term is used in Section 13(d)(3) of the Exchange Act), such “person” will be deemed to have Beneficial Ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only after the passage of time and (b) in the case of a “group” (as such term is used in Rule 13d-5(b)(1) under the Exchange Act) which group includes one or more Permitted Holders (or one

or more Permitted Holders is deemed to share Beneficial Ownership with one or more other persons of any shares of Capital Stock), (i) such “group” shall be deemed not to have Beneficial Ownership of any shares held by such Permitted Holder and (ii) any person (other than such Permitted Holder) that is a member of such group (or sharing such Beneficial Ownership) shall be deemed not to have Beneficial Ownership of any shares held by such Permitted Holder (or in which any Permitted Holder shares Beneficial Ownership). The terms “Beneficially Owns,” “Beneficially Owned” and “Beneficial Ownership” have a corresponding meaning.

“Board of Directors” means:

“Boost Asset Purchase Agreement” means the Asset Purchase Agreement, dated as of July 26, 2019, among Parent, Sprint and DISH Network Corporation and any exhibits attached thereto, as amended, restated, amended and restated, supplemented or otherwise modified or replaced (including a replacement involving different counterparties) from time to time.

“Bridge Credit Agreement” means the Bridge Term Loan Credit Agreement, dated April 1, 2020, by and among Parent, the Issuer, the subsidiaries of the Issuer party thereto, the financial institutions from time to time parties thereto and Goldman Sachs Bank USA, as administrative agent, together with the related documents thereto (including any term loans and revolving loans thereunder, any guarantees and security documents), as further amended, extended, renewed, restated, supplemented or otherwise modified (in whole or in part, and without limitation as to amount, terms, conditions, covenants and other provisions) from time to time. On April 9, 2020, all $19.0 billion of borrowings outstanding under the Bridge Credit Agreement were repaid in full.

“Business Combination Agreement” means that certain Business Combination Agreement, dated as of October 3, 2012, as amended from time to time, by and among Deutsche Telekom AG, T-Mobile Global Zwischenholding GmbH, T-Mobile Global Holding GmbH, the Issuer and MetroPCS Communications, Inc.

“Business Day” means, unless otherwise provided by board resolution, officers’ certificate or Supplemental Indenture for a particular series, any day except a Saturday, Sunday, or a legal holiday in the City of New York or in any place of payment with respect to the Notes on which banking institutions are authorized or required by law, regulation or executive order to close.

“Capital Stock” means:

“Captive Insurance Subsidiary” means any direct or indirect Subsidiary of the Issuer that bears financial risk or exposure relating to insurance or reinsurance activities (including without limitation the Reinsurance Entity) and any segregated accounts associated with any such Person.

“Cash Equivalents” means:

“CFC” means a “controlled foreign corporation” within the meaning of Section 957 of the Internal Revenue Code.

“Change of Control” means the occurrence of any of the following:

“Change of Control Offer” has the meaning assigned to that term in the provision described under the caption “—Repurchase at the Option of Holders—Change of Control Triggering Event.”

“Change of Control Payment” has the meaning assigned to that term in the provision described under the caption “—Repurchase at the Option of Holders—Change of Control Triggering Event.”

“Change of Control Payment Date” has the meaning assigned to that term in the provision described under the caption “—Repurchase at the Option of Holders—Change of Control Triggering Event.”

“Change of Control Triggering Event” with respect to any series of the Notes means:

“Closing Date” means the date on which the Merger was consummated, or May 1, 2013.

“Consolidated Cash Flow” means, with respect to any specified Person for any period, the Consolidated Net Income of such Person for such period plus, without duplication:

Notwithstanding the preceding, the provision for taxes based on the income or profits of, and the depreciation and amortization and other non-cash expenses of, a Restricted Subsidiary of the Issuer that is not a Subsidiary Guarantor will be added to Consolidated Net Income to compute Consolidated Cash Flow of the Issuer only to the extent that a corresponding amount would be permitted at the date of determination to be dividended to the Issuer by such Restricted Subsidiary without prior governmental approval (that has not been obtained), and without direct or indirect restriction pursuant to the terms of its charter and all agreements, instruments, judgments, decrees, orders, statutes, rules and governmental regulations applicable to that Restricted Subsidiary or its stockholders.

For the avoidance of doubt, calculations of “Consolidated Cash Flow” of the Issuer for any period prior to the Closing Date for purposes of calculating the Debt to Cash Flow Ratio shall be on a pro forma basis as described in the last paragraph of the definition of “Debt to Cash Flow Ratio.”

“Consolidated Indebtedness” means:

“Consolidated Interest Expense” means, with respect to any Person for any period, the sum of, without duplication:

in each case, on a consolidated basis and in accordance with GAAP; excluding, however, any amount of such interest of any Restricted Subsidiary of the referent Person if the net income of such Restricted Subsidiary is excluded in the calculation of Consolidated Net Income pursuant to clause (2) of the definition thereof (but only in the same proportion as the net income of such Restricted Subsidiary is excluded from the calculation of Consolidated Net Income pursuant to clause (2) of the definition thereof). Notwithstanding the foregoing, if any lease or other liability is reclassified as indebtedness or as a Financing Lease Obligation due to a change in accounting principles or the application thereof after the Closing Date, the interest component of all payments associated with such lease or other liability shall be excluded from Consolidated Interest Expense.

“Consolidated Net Income” means, with respect to any specified Person for any period, the aggregate of the Net Income of such Person and its Restricted Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that:

“Consolidated Net Tangible Assets” means, with respect to any Person, the aggregate amount of assets (less applicable reserves and other properly deductible items) after deducting therefrom (1) all current liabilities, except for (a) notes and loans payable, (b) current maturities of long-term debt and (c) current maturities of obligations under Financing Lease Obligations, and (2) to the extent included in such aggregate amount of assets, all

intangible assets, goodwill, trade names, trademarks, patents, organization and development expenses, unamortized debt discount and expenses and deferred charges (other than capitalized unamortized product development costs, such as, without limitation, capitalized hardware and software development costs), determined on a consolidated basis in accordance with GAAP consistently applied, as determined on a Pro Forma Basis for the most recently ended Test Period.

“Consolidated Net Worth” means, with respect to any Person, at the date of any determination, the consolidated stockholders’ or owners’ equity of the holders of Capital Stock of such Person and its Subsidiaries, determined on a consolidated basis in accordance with GAAP consistently applied, as determined on a Pro Forma Basis.

“Consolidated Total Assets” means, with respect to any Person, the consolidated total assets of such Person and its Subsidiaries as set forth on the most recent balance sheet of such Person prepared in accordance with GAAP, as determined on a Pro Forma Basis.

“Contribution Indebtedness” means, Indebtedness in an aggregate principal amount at any one time outstanding, including all Permitted Refinancing Indebtedness incurred to renew, refund, refinance, replace, defease or discharge such Indebtedness, not to exceed 150% of the aggregate amount of all Net Equity Proceeds.

“Convertible Debt” means Indebtedness of the Issuer (which may be Guaranteed by the Guarantors) permitted to be incurred hereunder that is either (a) convertible or exchangeable into common stock of Parent (and cash in lieu of fractional shares) and/or cash (in an amount determined by reference to the price of such common stock) or (b) sold as units with call options, warrants or rights to purchase (or substantially equivalent derivative transactions) that are exercisable for common stock of Parent and/or cash (in an amount determined by reference to the price of such common stock).

“Corporate Trust Office of the Trustee” means, solely for purposes of presenting Notes, Deutsche Bank Trust Company Americas located at 1 Columbus Circle, 17th Floor, Mail Stop: NYC01-1710, New York, NY 10019, and, for all other purposes, the office of the Trustee at which any time its corporate trust business will be administered, which at the date hereof is located at 1 Columbus Circle, 17th Floor, Mail Stop: NYC01-1710, New York, NY 10019, or such other address as the Trustee may designate from time to time by notice to the holders and the Issuer, or the principal corporate trust office of any successor trustee (or such other address as such successor trustee may designate from time to time by notice to the holders and the Issuer).

“Credit Agreement” means (a) the Credit Agreement, dated April 1, 2020, by and among Parent, the Issuer, the subsidiaries of the Issuer party thereto, the financial institutions from time to time parties thereto and Deutsche Bank AG New York Branch, as administrative agent, together with the related documents thereto (including any term loans and revolving loans thereunder, any guarantees and security documents), as further amended, extended, renewed, restated, replaced, supplemented or otherwise modified (in whole or in part, and without limitation as to amount, terms, conditions, covenants and other provisions) from time to time, and (b) any agreement (and related document) governing indebtedness which is incurred to Refinance, in whole or in part, the borrowings and commitments then outstanding or permitted to be outstanding under such Credit Agreement or a successor Credit Agreement, whether by the same or any other lender or group of lenders.

“Credit Facilities” means, one or more debt facilities or other Indebtedness, whether in the form of loans or securities (including the Credit Agreement), financing leases, purchase money financings or commercial paper facilities, providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to such lenders or to special purpose entities formed to borrow from such lenders against such receivables), financing leases, purchase money debt, debt securities or letters of credit, in each case, as amended, restated, modified, renewed, refunded, replaced (whether upon or after termination or otherwise) or refinanced (including, in each case, by means of sales of debt securities) in whole or in part from time to time.

“Crown Towers Transaction Agreements” means (i) the Master Agreement, dated as of September 28, 2012 (as the same may be amended, modified or supplemented from time to time) among the Issuer, Crown Castle International Corp., a Delaware corporation, and certain Subsidiaries of the Issuer; and (ii) each of the other transaction documents entered into in connection therewith or contemplated thereby, as they may be amended, modified or supplemented from time to time.

“Debt to Cash Flow Ratio” means, with respect to any Person as of any date of determination, the ratio of (a) the Consolidated Indebtedness of such Person as of such date, less cash and Cash Equivalents, to (b) the Consolidated Cash Flow of such Person for the four most recent full fiscal quarters ending immediately prior to such date for which internal financial statements are available.

For purposes of making the computation referred to above:

For the avoidance of doubt, if the Debt to Cash Flow Ratio is determined for any period commencing prior to the date that is four fiscal quarters after the fiscal quarter during which the Closing Date occurs, the Debt to Cash Flow Ratio shall be calculated giving pro forma effect to the Transactions as if the Transactions had occurred on the first day of the four quarter reference period.

“December 2012 Sixth Supplemental Indenture” means the Sixth Supplemental Indenture, dated as of December 14, 2012, among MetroPCS Wireless, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, to the September 2010 Senior Notes Indenture.

“Default” means any event that is, or with the passage of time or the giving of notice or both would be, an Event of Default.

“Designated Entity” means (i) Iowa Wireless Services LLC, a Delaware limited liability company, or (ii) any Designated Tower Entity.

“Designated L/C Facilities” means one or more letter of credit facilities entered into from time to time by the Issuer or a Subsidiary providing in aggregate for up to $300.0 million in availability (in each case as may be amended, supplemented or otherwise modified from time to time).

“Designated Non-cash Consideration” means the Fair Market Value (as determined in good faith by the Issuer) of non-cash consideration received by the Issuer or a Restricted Subsidiary in connection with an Asset Sale that is so designated as Designated Non-cash Consideration pursuant to an officers’ certificate, setting forth such valuation, less the amount of cash and Cash Equivalents received in connection with a subsequent sale of, or other receipt of cash and Cash Equivalents in respect of, such Designated Non-cash Consideration.

“Designated Tower Entity” means any entity established solely or primarily for the limited purpose of holding wireless communications sites, towers, and related contracts, equipment, improvements, real estate, and other assets, and performing other activities incidental thereto or in connection with the Towers Transaction. For the avoidance of doubt, T-Mobile USA Tower LLC and T-Mobile West Tower LLC are each Designated Tower Entities.

“Disqualified Stock” means, with respect to Notes of any series, any Capital Stock that, by its terms (or by the terms of any security into which it is convertible, or for which it is exchangeable, in each case, at the option of the holder of the Capital Stock), or upon the happening of any event, matures or is mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable at the option of the holder of the Capital Stock, in whole or in part, on or prior to the date that is 91 days after the date on which the Notes of the applicable series mature; provided that any class of Capital Stock of such Person that, by its terms, requires such Person to satisfy in full its obligations with respect to the payment of dividends or upon maturity, redemption (pursuant to a sinking fund or otherwise) or repurchase thereof or otherwise by the delivery of Capital Stock, and that is not convertible, puttable or exchangeable for cash, Disqualified Stock or Indebtedness, will not be deemed to be Disqualified Stock, so long as such Person satisfies its obligations with respect thereto solely by the delivery of Capital Stock. Notwithstanding the preceding sentence, any Capital Stock that would constitute Disqualified Stock solely because the holders of the Capital Stock have the right to require the Issuer to repurchase such Capital Stock upon the occurrence of a change of control or an asset sale will not constitute Disqualified Stock if the terms of such Capital Stock provide that the Issuer may not repurchase or redeem any such Capital Stock pursuant to such provisions unless such repurchase or redemption complies with the covenant described above under the caption “—Certain Covenants—Restricted Payments.” The amount of Disqualified Stock deemed to be outstanding at any time for purposes of the Indenture will be the maximum amount that the Issuer and its Restricted Subsidiaries may become obligated to pay upon the maturity of, or pursuant to any mandatory redemption provisions of, such Disqualified Stock, exclusive of accrued dividends.

“Domestic Subsidiary” means any Subsidiary of the Issuer that is not a Foreign Subsidiary.

“DT” means Deutsche Telekom AG, an Aktiengesellschaft organized and existing under the laws of the Federal Republic of Germany.

“DT Notes” shall have the meaning assigned to such term in the Business Combination Agreement.

“Equity Interests” means Capital Stock and all warrants, options or other rights to acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable for, Capital Stock).

“Excluded Subsidiary” means any Subsidiary of Parent that is, at any time of determination, (i) not a Wholly-Owned Subsidiary, (ii) an Immaterial Subsidiary, (iii) a Foreign Subsidiary, (iv) a Domestic Subsidiary that is (x) a FSHCO or (y) a direct or indirect Subsidiary of a Foreign Subsidiary that is a CFC, (v) an “Unrestricted Subsidiary” (or the equivalent thereof) under the Credit Agreement, (vi) a not-for-profit Subsidiary, (vii) a Captive Insurance Subsidiary, (viii) a special purpose securitization vehicle (or similar entity), including any Permitted Receivables Financing Subsidiary, any Permitted Spectrum Financing Subsidiary or any Permitted Tower Financing Subsidiary, or any of their respective Subsidiaries, (ix) prohibited from guaranteeing the Specified Obligations by any applicable law (including financial assistance, fraudulent conveyance, preference, thin capitalization or other similar laws or regulations) or by any contractual requirement existing on the date of the consummation of the Sprint Merger or on the date of the acquisition of such Subsidiary or the date such Subsidiary became a “Restricted Subsidiary” under the Credit Agreement (in each case not created in contemplation of such acquisition or of such Restricted Subsidiary becoming such a Restricted Subsidiary) (and for so long as such restriction or any replacement or renewal thereof is in effect), including any requirement to obtain the consent, approval, license or authorization of a Governmental Authority or third party (other than the Issuer or any Guarantor or “Restricted Subsidiary” under the Credit Agreement) (unless such consent, approval, license or authorization has been obtained), (x) [reserved], (xi) with respect to which the provision of a guarantee would, in the reasonable good faith determination of the Issuer in consultation with the administrative agent under the Credit Agreement (for so long as the Credit Agreement is outstanding), be expected to result in materially adverse tax or regulatory consequences to the Issuer or any of

its Subsidiaries or (xii) with respect to which the Issuer and the administrative agent under the Credit Agreement (for so long as the Credit Agreement is outstanding) reasonably determine the cost or other consequences of providing a guarantee is likely to be excessive in relation to the value to be afforded thereby; provided that, notwithstanding the foregoing, (a) the Issuer may in its sole discretion designate any Excluded Subsidiary as a Subsidiary Guarantor and may, thereafter, re-designate such Subsidiary as an Excluded Subsidiary (so long as such Subsidiary otherwise then qualifies as an Excluded Subsidiary pursuant to any of clauses (ii) through (xii) above), upon which re-designation such Subsidiary shall automatically be released from its Note Guarantee; provided that, for so long as the Credit Agreement is outstanding, in the case of any designation (or re-designation) of any Subsidiary that is not a Domestic Subsidiary as a Subsidiary Guarantor, (x) the jurisdiction of such Subsidiary shall be reasonably satisfactory to the administrative agent under the Credit Agreement and (y) the administrative agent under the Credit Agreement shall have received at least 3 Business Days prior to such Subsidiary becoming a Subsidiary Guarantor, all documentation and other information required by regulatory authorities with respect to such Subsidiary under applicable “know your customer” and anti-money laundering rules and regulations, including, without limitation, the PATRIOT Act, in each case as reasonably requested by the administrative agent under the Credit Agreement at least 10 Business Days prior to such Subsidiary becoming a Subsidiary Guarantor and (b) no Subsidiary of Parent that provides a guarantee of the Existing T-Mobile Unsecured Notes described in clauses (i)-(xvii) of the definition thereof in the case of the 2026 Notes, or clauses (i)-(xx) thereof in the case of the 2029 Notes or the 2031 Notes, shall constitute an Excluded Subsidiary.

“Existing Indebtedness” means (a) Indebtedness of the Issuer and its Subsidiaries (other than Indebtedness in respect of the DT Notes) in existence on the Closing Date, until such amounts are repaid, (b) (1) the $1.75B Notes in existence on the Closing Date (and any “Exchange Notes” (as defined in the $1.75B Notes Indenture) relating thereto), and (2) all other Indebtedness of MetroPCS Wireless, Inc. and its Subsidiaries in existence on the Closing Date that was not incurred in violation of the terms of the Business Combination Agreement, in each case until such amounts are repaid (provided that the aggregate principal amount of Indebtedness incurred in contemplation of the Transactions, including any Indebtedness in the form of the $1.75B Notes and notes issued on the date of the Base Indenture, in each case permitted by this clause (b), shall not exceed $20.5 billion).

“Existing Receivables Financing Subsidiaries” means each of T-Mobile Airtime Funding LLC, T-Mobile Handset Funding LLC, SFE 1, LLC and SFE 2, LLC, together with their successors and assigns and any Subsidiary of the foregoing.

“Existing Sprint Spectrum Financing Documents” means the Existing Sprint Spectrum-Backed Notes, the Existing Sprint Spectrum Indenture, the Initial Spectrum Performance Agreement, the Intra-Company Spectrum Lease Agreement, dated as of October 27, 2016, among certain of the Existing Sprint Spectrum Note Entities, Sprint Communications, and the other parties thereto, each “Transaction Document” (as defined in the Existing Sprint Spectrum Indenture) and each other document related thereto, in each case as amended, supplemented or otherwise modified from time to time.

“Existing Sprint Spectrum Indenture” means the Indenture, dated as of October 27, 2016, by and among Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC, and Deutsche Bank Trust Company Americas, as trustee, as amended, supplemented or otherwise modified from time to time, including as supplemented with respect to each series of Existing Sprint Spectrum-Backed Notes.

“Existing Sprint Spectrum Issuers” means Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC, and their successors and assigns.

“Existing Sprint Spectrum Note Entities” means, collectively, each of Sprint Spectrum Depositor LLC, Sprint Spectrum Depositor II LLC, Sprint Spectrum Depositor III LLC, Sprint Intermediate HoldCo LLC, Sprint Intermediate HoldCo II LLC, Sprint Intermediate HoldCo III LLC, Sprint Spectrum PledgeCo LLC, Sprint Spectrum PledgeCo II LLC, Sprint Spectrum PledgeCo III LLC, Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC, Sprint Spectrum License Holder LLC, Sprint Spectrum License Holder II LLC and Sprint Spectrum License Holder III LLC, their successors and assigns and any Subsidiary of the foregoing.

“Existing Sprint Spectrum Transaction” means the transactions contemplated by the Existing Sprint Spectrum Financing Documents, including the issuance of any Existing Sprint Spectrum-Backed Notes.

“Existing Sprint Spectrum-Backed Notes” means the Existing Sprint Spectrum Issuers’ Series 2018-1 4.738% Senior Secured Notes, Class A-1, Series 2018-1 5.152% Senior Secured Notes, Class A-2, Series 2016-1 3.360% Senior Secured Notes, Class A-1 (the amount remaining outstanding under which was repaid in full on August 20, 2021), and any other note or series of notes issued under the Existing Sprint Spectrum Indenture from time to time.

“Existing Sprint Unsecured Notes” means (i) the 6.875% Notes due 2028 issued pursuant to the Sprint Capital Corporation Indenture, as supplemented by that certain Officers’ Certificate dated as of November 16, 1998, (ii) the 8.750% Notes due 2032 issued pursuant to the Sprint Capital Corporation Indenture, as supplemented by that certain Officers’ Certificate dated as of March 8, 2002, (iii) the 11.500% Notes due 2021 issued pursuant to the Sprint Communications Indenture, as supplemented by that certain First Supplemental Indenture dated as of November 9, 2011, between Sprint Communications (formerly known as Sprint Nextel Corporation) and The Bank of New York Trust Company, N.A., as trustee (which were repaid at maturity on November 15, 2021), (iv) the 7.000% Notes due 2020 issued pursuant to the Sprint Communications Indenture, as supplemented by that certain Fifth Supplemental Indenture dated as of August 14, 2012, between Sprint Communications (formerly known as Sprint Nextel Corporation), and The Bank of New York Trust Company, N.A., as trustee (which were repaid at maturity on August 15, 2020), (v) the 6.000% Notes due 2022 issued pursuant to the Sprint Communications Indenture, as supplemented by that certain Sixth Supplemental Indenture dated as of November 14, 2012, between Sprint Communications (formerly known as Sprint Nextel Corporation), and The Bank of New York Trust Company, N.A., as trustee, (vi) the 7.250% Notes due 2021 issued pursuant to the Sprint Indenture, as supplemented by that certain First Supplemental Indenture dated as of September 11, 2013, among Sprint, Sprint Communications, as guarantor, and the Bank of New York Mellon Trust Company, N.A., as trustee (which were repaid at maturity on September 15, 2021), (vii) the 7.875% Notes due 2023 issued pursuant to the Sprint Indenture, as supplemented by that certain Second Supplemental Indenture dated as of September 11, 2013, among Sprint, Sprint Communications, as guarantor, and the Bank of New York Mellon Trust Company, N.A., as trustee, (viii) the 7.125% Notes due 2024 issued pursuant to the Sprint Indenture, as supplemented by that certain Third Supplemental Indenture dated as of December 12, 2013, among Sprint, Sprint Communications, as guarantor, and the Bank of New York Mellon Trust Company, N.A., as trustee, (ix) the 7.625% Notes due 2025 issued pursuant to the Sprint Indenture, as supplemented by that certain Fourth Supplemental Indenture dated as of February 24, 2015, among Sprint, Sprint Communications, as guarantor, and the Bank of New York Mellon Trust Company, N.A., as trustee and (x) the 7.625% Notes due 2026 issued pursuant to the Sprint Indenture, as supplemented by that certain Fifth Supplemental Indenture dated as of February 22, 2018, among Sprint, Sprint Communications, as guarantor, and the Bank of New York Mellon Trust Company, N.A., as trustee.

“Existing T-Mobile Secured Notes” means (i) the 3.500% Senior Secured Notes due 2025 issued pursuant to the Indenture, dated as of April 9, 2020 (the “April 2020 Base Indenture”), by and between T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, as supplemented by that certain First Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (ii) the 3.750% Senior Secured Notes due 2027 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Second Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (iii) the 3.875% Senior Secured Notes due 2030 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Third Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (iv) the 4.375% Senior Secured Notes due 2040 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Fourth Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (v) the 4.500% Senior Secured Notes due 2050 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Fifth Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (vi) the 1.500% Senior Secured Notes due 2026 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Seventh Supplemental Indenture, dated as of June 24, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (vii) the 2.050% Senior Secured Notes due 2028 issued pursuant

to the April 2020 Base Indenture, as supplemented by that certain Eighth Supplemental Indenture, dated as of June 24, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Tenth Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (viii) the 2.550% Senior Secured Notes due 2031 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Ninth Supplemental Indenture, dated as of June 24, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Eleventh Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (ix) the 2.250% Senior Secured Notes due 2031 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Fourteenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (x) the 3.000% Senior Secured Notes due 2041 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Twelfth Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Fifteenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (xi) the 3.300% Senior Secured Notes due 2051 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Thirteenth Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Sixteenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee and (xii) the 3.600% Senior Secured Notes due 2060 issued pursuant to the April 2020 Base Indenture, as supplemented that certain Seventeenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Twentieth Supplemental Indenture, dated as of August 13, 2021, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee.

“Existing T-Mobile Unsecured Notes” means (i) the 6.000% Senior Notes due 2023 issued pursuant to the Base Indenture, as supplemented by that certain Seventeenth Supplemental Indenture dated as of September 5, 2014, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on May 23, 2021), (ii) the 6.500% Senior Notes due 2024 issued pursuant to the Base Indenture, as supplemented by that certain Fifteenth Supplemental Indenture dated as of November 21, 2013, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on July 4, 2020), (iii) the 6.375% Senior Notes due 2025 issued pursuant to the Base Indenture, as supplemented by that certain Eighteenth Supplemental Indenture dated as of September 5, 2014, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on September 1, 2020), (iv) the 6.500% Senior Notes due 2026 issued pursuant to the Base Indenture, as supplemented by that certain Twentieth Supplemental Indenture dated as of November 5, 2015, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on March 27, 2021), (v) the 6.000% Senior Notes due 2024 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-First Supplemental Indenture dated as of April 1, 2016, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on May 23, 2021), (vi) the 4.000% Senior Notes due 2022 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-Third Supplemental Indenture dated as of March 16, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on March 16, 2022), (vii) the 5.125% Senior Notes due 2025 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-Fourth Supplemental Indenture dated as of March 16, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on May 23, 2021), (viii) the 5.375% Senior Notes due 2027 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-Fifth Supplemental Indenture dated as of March 16, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (ix) the 4.000% Senior Notes due 2022-1 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-Sixth Supplemental Indenture

dated as of April 27, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on March 16, 2022), (x) the 5.125% Senior Notes due 2025-1 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-Seventh Supplemental Indenture dated as of April 28, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on July 4, 2020), (xi) the 5.375% Senior Notes due 2027-1 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-Eighth Supplemental Indenture dated as of April 28, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (the maturity date applicable to which was amended from April 15, 2027 to April 15, 2022 in connection with the Sprint Merger, and which were repaid at maturity on April 15, 2022), (xii) the 5.300% Senior Notes due 2021 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-Ninth Supplemental Indenture dated as of May 9, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were repurchased and canceled in connection with the Sprint Merger), (xiii) the 6.000% Senior Notes due 2024 issued pursuant to the Base Indenture, as supplemented by that certain Twenty-First Supplemental Indenture dated as of April 1, 2016, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, as supplemented further by that certain Thirtieth Supplemental Indenture dated as of May 9, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were repurchased and canceled in connection with the Sprint Merger), (xiv) the 4.500% Senior Notes due 2026 issued pursuant to the Base Indenture, as supplemented by that certain Thirty-Second Supplemental Indenture, dated as of January 25, 2018, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on August 23, 2021), (xv) the 4.750% Senior Notes due 2028 issued pursuant to the Base Indenture, as supplemented by that certain Thirty-Third Supplemental Indenture dated as of January 25, 2018, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xvi) the 4.500% Senior Notes due 2026-1 issued pursuant to the Base Indenture, as supplemented by that certain Thirty-Fifth Supplemental Indenture, dated as of April 30, 2018, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee (which were redeemed on August 23, 2021), (xvii) the 4.750% Senior Notes due 2028-1 issued pursuant to the Base Indenture, as supplemented by that certain Thirty-Sixth Supplemental Indenture, dated as of April 30, 2018, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xviii) the 2.250% Senior Notes due 2026 issued pursuant to the Base Indenture, as supplemented by that certain Forty-Third Supplemental Indenture, dated as of January 14, 2021, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xix) the 2.625% Senior Notes due 2029 issued pursuant to the Base Indenture, as supplemented by that certain Forty-Fourth Supplemental Indenture, dated as of January 14, 2021, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xx) the 2.875% Senior Notes due 2031 issued pursuant to the Base Indenture, as supplemented by that certain Forty-Fifth Supplemental Indenture, dated as of January 14, 2021, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xxi) the 2.625% Senior Notes due 2026 issued pursuant to the Base Indenture, as supplemented by that certain Forty-Sixth Supplemental Indenture, dated as of March 23, 2021, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xxii) the 3.375% Senior Notes due 2029 issued pursuant to the Base Indenture, as supplemented by that certain Forty-Seventh Supplemental Indenture, dated as of March 23, 2021, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee and (xxiii) the 3.500% Senior Notes due 2031 issued pursuant to the Base Indenture, as supplemented by that certain Forty-Eighth Supplemental Indenture, dated as of March 23, 2021, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee.

“Fair Market Value” means the value that would be paid by a willing buyer to an unaffiliated willing seller in a transaction not involving distress or necessity of either party, determined in good faith by the Issuer’s Board of Directors or a senior officer of the Issuer, which determination shall be conclusive.

“FCC” means the United States Federal Communications Commission and any successor agency that is responsible for regulating the United States telecommunications industry.

“FCC Licenses” means all licenses or permits now or hereafter issued by the FCC.

“Financing Lease Obligation” means, at the time any determination is to be made, the amount of the liability in respect of a financing lease that would at that time be required to be capitalized and reflected as a liability on a balance sheet prepared in accordance with GAAP.

“First Lien Debt to Cash Flow Ratio” means, as of the last day of any period, the ratio of (a) (i) the Specified Consolidated Indebtedness of such Person as of such date that constitutes First Lien Obligations (including, in any event, the aggregate amount of Specified Consolidated Indebtedness constituting Permitted Spectrum Financings) less (ii) the aggregate amount of unrestricted Specified Cash Equivalents of the Issuer and its Subsidiaries as of such date to (b) the Specified Consolidated Cash Flow of such Person for such period.

For purposes of making the computation referred to above, the First Lien Debt to Cash Flow Ratio, Specified Consolidated Indebtedness and Specified Consolidated Cash Flow shall be calculated on a Pro Forma Basis.

“First Lien Obligations” means any Specified Indebtedness that is secured by Liens on the collateral that secures the Existing T-Mobile Secured Notes on a pari passu basis with the Liens that secure the Existing T-Mobile Secured Notes.

“First Priority Initial Spectrum Obligations” means, collectively, the lease payments and all other obligations and liabilities of the Issuer and the Guarantors (including, without limitation, Post-Petition Interest), whether direct or indirect, absolute or contingent, due or to become due, or now existing or hereafter incurred, which may arise under, out of, or in connection with (i) the Initial Intra-Company Spectrum Lease Agreement and (ii) the Initial Spectrum Performance Agreement, in each case, whether on account of principal, lease payments, guarantee payments, interest, reimbursement obligations, fees, prepayment premiums, liquidated damages, indemnities, costs, expenses or otherwise (including, without limitation, all fees and disbursements of counsel that are required to be paid by the Issuer or any Guarantors pursuant to the terms of any of the foregoing agreements); provided that notwithstanding anything to the contrary in any documents or agreements (and regardless of any underlying actual amounts owing or outstanding), the total amount of the foregoing obligations that may constitute “First Priority Initial Spectrum Obligations” shall be limited to an aggregate amount not to exceed at any time $3,500,000,000.

“Fitch” means Fitch Ratings, Inc. and its successors.

“Foreign Subsidiary” means any Subsidiary of Parent other than a Subsidiary organized under the laws of the United States or any state of the United States or the District of Columbia.

“FSHCO” means any Subsidiary of Parent that owns no material assets (directly or through Subsidiaries) other than Equity Interests (or Equity Interests and Specified Indebtedness) in one or more Foreign Subsidiaries that are CFCs.

“GAAP” means generally accepted accounting principles as in effect on the date of any calculation or determination required under the Notes of the applicable series or the Indenture. Notwithstanding the foregoing, at any time, (i) the Issuer may elect to apply IFRS accounting principles in lieu of GAAP and, upon any such election, references herein to GAAP or parts of the Accounting Standards Codification or “ASC” shall thereafter be construed to mean IFRS (except as otherwise provided in the Indenture) and (ii) the Issuer, on any date may elect to establish that GAAP shall mean GAAP as in effect on such date; provided that any such election, once made, shall be irrevocable; provided, further, that any calculation or determination in the Indenture that requires the application of GAAP for periods that include fiscal quarters ended prior to the Issuer’s election to apply IFRS shall remain as previously calculated or determined in accordance with GAAP. The Issuer shall give notice of any such election made in accordance with this definition to the Trustee and the holders of outstanding Notes.

“Government Securities” means direct obligations (or certificates representing an ownership interest in such obligations) of the United States of America (including any agency or instrumentality thereof) for the payment of which the full faith and credit of the United States of America is pledged and which are not callable or redeemable at the issuer’s option.

“Governmental Authority” means any nation or government, any state, province, territory or other political subdivision thereof and any other agency, authority, instrumentality, regulatory body, court, central bank or other entity exercising executive, legislative, judicial, taxing, regulatory or administrative powers or functions of or pertaining to government (including any supra-national bodies such as the European Union or the European Central Bank).

“Governmental Authorization” means any permit, license, authorization, plan, directive, consent, permission, consent order or consent decree of or from any Governmental Authority, including but not limited to FCC Licenses.

“Guarantee” means a guarantee other than by endorsement of negotiable instruments for collection in the ordinary course of business, direct or indirect, in any manner including by way of a pledge of assets or through letters

of credit or reimbursement agreements in respect thereof, of all or any part of any Indebtedness (whether arising by virtue of partnership arrangements, or by agreements to keep-well, to purchase assets, goods, securities or services, to take or pay or to maintain financial statement conditions or otherwise).

“Guarantor” means, with respect to the Notes of any series, any Person who has guaranteed the obligations of the Issuer under the applicable Indenture until released from its Note Guarantee pursuant to the provisions of the applicable Indenture.

“Hedging Obligations” means, with respect to any specified Person, the obligations of such Person under:

and any guarantee in respect thereof.

“IFRS” means the international accounting standards promulgated by the International Accounting Standards Board and its predecessors, as adopted by the European Union, as in effect from time to time.

“Immaterial Subsidiary” means any Subsidiary of the Issuer that at any time has Consolidated Total Assets accounting for less than 2.50% of the Issuer’s Consolidated Total Assets; provided that the aggregate Consolidated Total Assets of all Immaterial Subsidiaries shall not at any time exceed 5.00% of the Issuer’s Consolidated Total Assets.

“Indebtedness” means, with respect to any specified Person, without duplication, (1) any indebtedness of such Person (excluding accrued expenses and trade payables), whether or not contingent:

The amount of any Indebtedness outstanding as of any date will be:

“Indebtedness for Borrowed Money” means, with respect to any specified Person, without duplication, the Specified Indebtedness described in clauses (1)(a) and (1)(b) of the definition of “Specified Indebtedness.”

“Initial Intra-Company Spectrum Lease Agreement” means the Intra-Company Spectrum Lease Agreement, dated as of October 27, 2016, by and among, inter alia, various SpectrumCo1 entities, as lessors, Sprint Communications, as lessee, Sprint and the other guarantors party thereto (as amended from time to time).

“Initial Spectrum Performance Agreement” means the SCI Payment and Performance Undertaking Agreement, dated as of October 27, 2016, between Sprint Communications, Sprint, the other grantors party thereto, and Deutsche Bank Trust Company Americas, as trustee (as amended from time to time).

“Insolvency Proceeding” means each of the following, in each case with respect to the Issuer or any Guarantor or any property or Specified Indebtedness of the Issuer or any Guarantor: (a)(i) any voluntary or involuntary case or proceeding under any Bankruptcy Law or any other voluntary or involuntary insolvency, reorganization or bankruptcy case or proceeding, (ii) any case or proceeding seeking receivership, liquidation, reorganization, winding up or other similar case or proceeding, (iii) any case or proceeding seeking arrangement, adjustment, protection, relief or composition of any debt and (iv) any case or proceeding seeking the entry of an order for relief or the appointment of a custodian, receiver, trustee or other similar official and (b) any general assignment for the benefit of creditors.

“Internal Revenue Code” means the Internal Revenue Code of 1986, as amended.

“Investment Grade” means:

“Investment Grade Event” means:

“Investment Grade Event Election” means an election by the Issuer, upon or following the occurrence of an Investment Grade Event, to cause the Note Guarantees in respect of the Notes to be released. The Issuer shall give notice of any such election made in accordance with this definition to the Trustee and the holders of outstanding Notes.

“Investments” means, with respect to any Person, all direct or indirect investments by such Person in other Persons (including Affiliates) in the forms of loans (including Guarantees), advances (excluding commission, travel, entertainment, drawing accounts and similar advances to directors, officers and employees made in the ordinary course of business and excluding the purchase of assets, equipment, property or accounts receivables created or acquired in the ordinary course of business) or capital contributions, and purchases or other acquisitions for consideration of Indebtedness, Equity Interests or other securities. If the Issuer or any Restricted Subsidiary of the Issuer sells or otherwise disposes of any Capital Stock of any direct or indirect Restricted Subsidiary of the Issuer such that, after giving effect to any such sale or disposition, such Person is no longer a Restricted Subsidiary of the Issuer, the Issuer will be deemed to have made an Investment on the date of any such sale or disposition equal to the Fair Market Value of the Issuer’s Investments in such Restricted Subsidiary that were not sold or disposed of in an amount determined as provided in the final paragraph of the covenant described above under the caption “—Certain Covenants—Restricted Payments.” The acquisition by the Issuer or any Subsidiary of the Issuer of a Person that holds an Investment in a third Person will be deemed to be an Investment by the Issuer or such Subsidiary in such third Person in an amount equal to the Fair Market Value of the Investments held by the acquired Person in such third Person in an amount determined as provided in the final paragraph of the covenant described above under the caption “—Certain Covenants—Restricted Payments” as of the date the acquisition of the acquired Person is consummated. Except as otherwise provided in the Indenture, the amount of an Investment will be determined at the time the Investment is made and without giving effect to subsequent changes in value.

“ISIS Joint Venture” means Amended and Restated LLC Agreement of JVL Ventures, LLC dated October 1, 2010, as amended.

“Issue Date” means the effective date of the Board Resolution, officers’ certificate or supplemental indenture pursuant to which the first series of DT Notes was issued under the Base Indenture, or April 28, 2013.

“Lien” means, with respect to any asset, any mortgage, lien, pledge, charge, security interest or encumbrance of any kind in respect of such asset, whether or not filed, recorded or otherwise perfected under applicable law, including any conditional sale or other title retention agreement and any lease in the nature thereof; provided that in no event shall an operating lease in and of itself constitute a Lien.

“Material Subsidiary” means any Person that is a Domestic Subsidiary if, as of the date of the most recent balance sheet of the Issuer, the aggregate amount of securities of, loans and advances to, and other investments in, such Person held by the Issuer and its Subsidiaries exceeded 10% of the Issuer’s Consolidated Net Worth, provided that any Subsidiary that is at any time designated as an “Unrestricted Subsidiary” (or the equivalent thereof) under the Credit Agreement shall not constitute a “Material Subsidiary” for any purpose hereof.

“Merger” means the merger of MetroPCS Wireless, Inc. with and into the Issuer with the Issuer as the surviving Person, pursuant to the Business Combination Agreement.

“Moody’s” means Moody’s Investors Service, Inc., and its successors.

“Net Equity Proceeds” means the net cash proceeds received by the Issuer since the Closing Date as a contribution to its common equity capital or from the issue or sale of Equity Interests of the Issuer (other than Disqualified Stock).

“Net Income” means, with respect to any specified Person, the net income (loss) of such Person, determined in accordance with GAAP and before any reduction in respect of Preferred Stock accretion or dividends, excluding, however:

“Net Proceeds” means the aggregate cash proceeds received by the Issuer or any of its Restricted Subsidiaries in respect of any Asset Sale (including any cash received upon the sale or other disposition of any non-cash consideration received in any Asset Sale, but excluding any items deemed to be cash pursuant to clause (2)(a) of the covenant described above under the caption “—Repurchase at the Option of Holders—Asset Sales”), net of all costs relating to such Asset Sale, including (a) legal, accounting and investment banking fees, finder’s fees, sales commissions, employee severance costs, and any relocation expenses incurred as a result of the Asset Sale, (b) taxes paid or payable as a result of the Asset Sale, in each case, after taking into account any available tax credits or deductions and any tax sharing arrangements, (c) amounts required to be applied to the repayment of Indebtedness, other than Indebtedness under a Credit Facility, secured by a Lien on the asset or assets that were the subject of such Asset Sale, (d) all distributions and other payments required to be made to minority interest holders in Restricted Subsidiaries as a result of such Asset Sale and (e) any amounts to be set aside in any reserve established in accordance with GAAP or any amount placed in escrow, in either case for adjustment in respect of the sale price of such properties or assets or for liabilities associated with such Asset Sale and retained by the Issuer or any of its Restricted Subsidiaries until such time as such reserve is reversed or such escrow arrangement is terminated, in which case Net Proceeds shall include only the amount of the reserve so reversed or the amount returned to the Issuer or its Restricted Subsidiaries from such escrow arrangement, as the case may be.

“New Markets” means the collective reference to any wireless telephone markets other than the metropolitan areas of Las Vegas, Nevada; Los Angeles, San Francisco and Sacramento, California; Detroit, Michigan; Dallas/Fort Worth, Texas; Tampa/Sarasota, Orlando, Miami and Jacksonville, Florida; Atlanta, Georgia; Philadelphia, Pennsylvania; New York, New York; Boston, Massachusetts; and Hartford, Connecticut.

“New Market Losses” means, for any period, to the extent such losses were deducted in computing such Consolidated Net Income during the applicable period, an amount equal to any extraordinary loss plus any net loss (without duplication) realized by the Issuer or any of its Restricted Subsidiaries incurred in connection with construction, launch and operations in any New Market for such period, so long as such net losses are incurred on or prior to the fourth anniversary after the initial commencement of commercial operations in the applicable New Market.

“Non-Recourse Debt” means Specified Indebtedness:

provided that Non-Recourse Debt incurred by a Permitted Receivables Financing Subsidiary, Permitted Spectrum Financing Subsidiary or Permitted Tower Financing Subsidiary may have recourse to the Issuer and its Subsidiaries pursuant to Standard Securitization Undertakings.

“Note Guarantee” means the Guarantee by each Guarantor of obligations of the Issuer under the Indenture and the Notes of any series, executed in accordance with the provisions of the Indenture.

“Obligations” means any principal, interest, penalties, fees, indemnifications, reimbursements, cash collateral obligations, damages and other liabilities payable under the documentation governing any Indebtedness.

“Outstanding T-Mobile Secured Notes” means (i) the 3.500% Senior Secured Notes due 2025 issued pursuant to the Indenture, dated as of April 9, 2020 (the “April 2020 Base Indenture”), by and between T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust

Company Americas, as trustee, as supplemented by that certain First Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (ii) the 3.750% Senior Secured Notes due 2027 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Second Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (iii) the 3.875% Senior Secured Notes due 2030 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Third Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (iv) the 4.375% Senior Secured Notes due 2040 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Fourth Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (v) the 4.500% Senior Secured Notes due 2050 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Fifth Supplemental Indenture, dated as of April 9, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (vi) the 1.500% Senior Secured Notes due 2026 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Seventh Supplemental Indenture, dated as of June 24, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (vii) the 2.050% Senior Secured Notes due 2028 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Eighth Supplemental Indenture, dated as of June 24, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Tenth Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (viii) the 2.550% Senior Secured Notes due 2031 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Ninth Supplemental Indenture, dated as of June 24, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Eleventh Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (ix) the 2.250% Senior Secured Notes due 2031 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Fourteenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (x) the 3.000% Senior Secured Notes due 2041 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Twelfth Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Fifteenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (xi) the 3.300% Senior Secured Notes due 2051 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Thirteenth Supplemental Indenture, dated as of October 6, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Sixteenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (xii) the 3.400% Senior Secured Notes due 2052 issued pursuant to the April 2020 Base Indenture, as supplemented that certain Nineteenth Supplemental Indenture, dated as of August 13, 2021, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Twenty-Third Supplemental Indenture, dated as of December 6, 2021, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, (xiii) the 3.600% Senior Secured Notes due 2060 issued pursuant to the April 2020 Base Indenture, as supplemented that certain Seventeenth Supplemental Indenture, dated as of October 28, 2020, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee, and that certain Twentieth Supplemental Indenture, dated as of August 13, 2021, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee,

(xiv) the 2.400% Senior Secured Notes due 2029 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Twenty-First Supplemental Indenture, dated as of December 6, 2021, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee and (xv) the 2.700% Senior Secured Notes due 2032 issued pursuant to the April 2020 Base Indenture, as supplemented by that certain Twenty-Second Supplemental Indenture, dated as of December 6, 2021, by and among T-Mobile US, Inc., T-Mobile USA, Inc., each of the subsidiary guarantors from time to time party thereto and Deutsche Bank Trust Company Americas, as trustee.

“Permitted Acquisition” means:

“Permitted Bond Hedge Transaction” means any call or capped call option (or substantively equivalent derivative transaction) on Parent’s common stock purchased by the Issuer in connection with the issuance of any Convertible Debt; provided that the purchase price for such Permitted Bond Hedge Transaction, does not exceed the net cash proceeds received by the Issuer from the sale of such Convertible Debt issued in connection with the Permitted Bond Hedge Transaction.

“Permitted Business” means those businesses in which the Issuer and its Subsidiaries were engaged on the Closing Date, or any business similar, related, incidental or ancillary thereto or that constitutes a reasonable extension or expansion thereof, or any business reasonably related to the telecommunications industry, and the acquisition, holding or exploitation of any license relating to the delivery of those services.

“Permitted Holder” means (i) DT and (ii) any direct or indirect Subsidiary of DT.

“Permitted Investments” means:

Notwithstanding any other provision to the contrary, no Permitted Investment shall be deemed to be a Restricted Payment.

“Permitted Joint Venture Investment” means, with respect to any specified Person, Investments in any other Person engaged in a Permitted Business of which at least 40% of the outstanding Capital Stock of such other Person is at the time owned directly or indirectly by the specified Person.

“Permitted Liens” means:

“Permitted MetroPCS Notes” shall have the meaning assigned to such term in the Business Combination Agreement.

“Permitted Post-IG Event Election Liens” means:

“Permitted Payments to Parent” means, without duplication as to amounts:

“Permitted Receivables Financing” means any Receivables Financing of a Permitted Receivables Financing Subsidiary the terms of which (including financing terms, covenants, termination events and other provisions) (a) have been negotiated at arm’s length and (b) are, in the good faith determination of the Issuer’s Board of Directors or a senior financial officer of the Issuer, which determination shall be conclusive, in the aggregate economically fair and reasonable to the Issuer and its Subsidiaries.

“Permitted Receivables Financing Assets” means financial assets, including accounts receivable, chattel paper and other payment rights, and related assets (including contract rights and insurance payments), and the proceeds thereof.

“Permitted Receivables Financing Subsidiary” means, collectively, (i) each Existing Receivables Financing Subsidiary, (ii) each other Wholly-Owned Subsidiary of the Issuer that engages in no material activities other than in connection with Permitted Receivables Financings and any business or activities incidental or related to such business and (iii) any other Person formed for the purposes of engaging in a Permitted Receivables Financing in which the Issuer or any of its Subsidiaries makes a Specified Investment and to which the Issuer or any of its Subsidiaries transfers Permitted Receivables Financing Assets that engages in no material activities other than in connection with Permitted Receivables Financings, and any business or activities incidental or related to such business, and in the case of clause (ii) or (iii) above which is designated by the Board of Directors of the Issuer (as provided below) as a Permitted Receivables Financing Subsidiary and in each case (a) no portion of the Specified Indebtedness (contingent or otherwise) of which (i) is guaranteed by Parent, the Issuer or any of their Subsidiaries, other than another Permitted Receivables Financing Subsidiary or (to the extent that it might be deemed a guaranty) pursuant to Standard Securitization Undertakings, or (ii) is recourse to or obligates Parent, the Issuer or any of their Subsidiaries, other than another Permitted Receivables Financing Subsidiary, in any way other than pursuant to Standard Securitization Undertakings, (b) to which none of Parent, the Issuer or any of their Subsidiaries, other than another Permitted Receivables Financing Subsidiary, has any obligation to maintain or preserve such entity’s financial condition or cause such entity to achieve certain levels of operating results. Any such designation by the Board of Directors of the Issuer shall be evidenced to the Trustee by delivery to the Trustee of a certified copy of the resolution of the Board of Directors of the Issuer giving effect to such designation and a certificate executed by a Responsible Officer certifying that such designation complied with the foregoing conditions.

“Permitted Refinancing Indebtedness” means any Indebtedness of the Issuer or any of its Restricted Subsidiaries, any Disqualified Stock of the Issuer or any Preferred Stock of any Restricted Subsidiary issued to Refinance any other Indebtedness of the Issuer or any of its Restricted Subsidiaries (other than intercompany Indebtedness), any Disqualified Stock of the Issuer or any Preferred Stock of a Restricted Subsidiary in a principal amount or, in the case of Disqualified Stock of the Issuer or Preferred Stock of a Restricted Subsidiary, liquidation preference, not to exceed (after deduction of reasonable and customary fees and expenses incurred in connection with the Refinancing) the lesser of:

Notwithstanding the preceding, no Indebtedness, Disqualified Stock or Preferred Stock will be deemed to be Permitted Refinancing Indebtedness, unless:

“Permitted Spectrum Financing” means the Existing Sprint Spectrum Transaction.

“Permitted Spectrum Financing Subsidiary” means, collectively, (i) the Existing Sprint Spectrum Note Entities and (ii) any future special purpose vehicle Subsidiaries of the Issuer (including any “Depositors” and “Intermediate HoldCos”) formed as part of and for the purpose of consummating a future transaction similar to the Existing Sprint Spectrum Transaction, together with their successors and assigns and any Subsidiary thereof.

“Permitted Tower Financing” means the Specified Towers Transactions.

“Permitted Tower Financing Subsidiary” means any financing subsidiary formed in connection with a Permitted Tower Financing.

“Person” means any individual, corporation, partnership, joint venture, association, joint-stock company, trust, unincorporated organization, limited liability company or government or other entity.

“Phoenix Towers Transaction Agreements” means (i) the Purchase and Sale Agreement, dated as of July 30, 2015 (as the same may be amended, modified, or supplemented from time to time), among the Issuer, certain Subsidiaries of the Issuer, PTI US Acquisitions, LLC, and each sale site subsidiary party thereto; (ii) the Purchase and Sale Agreement (PR Sale Sites), dated as of October 28, 2015 (as the same may be amended, modified, or supplemented from time to time), among the Issuer, certain Subsidiaries of the Issuer, PTI US Acquisitions, LLC, and each sale site subsidiary party thereto; and (iii) each of the other transaction documents entered into in connection therewith or contemplated thereby, as they may be amended, modified or supplemented from time to time.

“Post-Petition Interest” means all interest (or entitlement to fees or expenses or other charges) accruing or that would have accrued after the commencement of any Insolvency Proceeding, irrespective of whether a claim for post-filing or petition interest (or entitlement to fees or expenses or other charges) is allowed or allowable in any such Insolvency Proceeding.

“Preferred Stock” means, with respect to any Person, any Capital Stock of such Person that has preferential rights to any other Capital Stock of such Person with respect to dividends or payments upon liquidation.

“Principal Property” means the land, land improvements, buildings and fixtures (to the extent they constitute real property interests) (including any leasehold interest therein) constituting the principal corporate office and the equipment located thereon which (a) is owned by the Issuer or any of its Subsidiaries; (b) has not been determined in good faith by the Board of Directors of the Issuer not to be materially important to the total business conducted

by Issuer and its Subsidiaries taken as a whole; and (c) has a net book value on the date as of which the determination is being made in excess of 1.0% of Consolidated Net Tangible Assets as most recently determined on or prior to such date (including, for purposes of such calculation, the land, land improvements, buildings and such fixtures comprising such office).

“Pro Forma Basis” means, with respect to compliance with any test or covenant or calculation of any ratio hereunder, the determination or calculation of such test, covenant or ratio (including in connection with Pro Forma Transactions) in accordance with the following provisions, mutatis mutandis:

“Pro Forma Transactions” means, (x) the Sprint Transactions, (y) any incurrence or repayment of Specified Indebtedness (other than working capital or Specified Indebtedness incurred in the ordinary course of business), any Specified Investment that results in a Person becoming a Subsidiary of the Issuer, any Permitted Acquisition or disposition that results in a Subsidiary ceasing to be a Subsidiary or any Specified Investment constituting an acquisition of assets constituting a business unit, line of business or division of another Person or any disposition of a business unit, line of business or division of the Issuer or any Subsidiary of the Issuer, in each case whether by merger, consolidation, amalgamation or otherwise and in each case under this clause (y) with a Specified Fair Market Value in excess of $25,000,000 and (z) any restructuring or cost saving, operational change or business rationalization initiative or other initiative.

“Rating Agency” means each of Moody’s, S&P, Fitch and, if any of Moody’s, S&P or Fitch ceases to exist or ceases to rate the notes of the applicable series for reasons outside of the control of the Issuer, any other “nationally recognized statistical rating organization” as such term is defined under Section 3(a)(62) of the Exchange Act selected by the Issuer as a replacement agency.

“Rating Event” with respect to any series of Notes means the Notes of such series cease to be rated Investment Grade by at least two Rating Agencies on any day during the Ratings Decline Period.

“Ratings Decline Period” means the period that (i) begins on the earlier of (a) the date of the first public announcement of the occurrence of a Change of Control or of the intention by the Issuer or a stockholder of the Issuer as applicable, to effect a Change of Control or (b) the occurrence thereof and (ii) ends 90 days following consummation of such Change of Control; provided that such period shall be extended for so long as the rating of the notes of the applicable series, as noted by the applicable Rating Agency, is under publicly announced consideration for downgrade by the applicable Rating Agency.

“Receivables Financing” means any transaction or series of transactions that may be entered into by Parent, the Issuer or any Subsidiary pursuant to which Parent, the Issuer or any Subsidiary of the Issuer may sell, convey or otherwise transfer to (a) a Permitted Receivables Financing Subsidiary (in the case of a transfer by Parent, the Issuer or any Subsidiary of the Issuer) or (b) any other Person (in the case of a transfer by a Permitted Receivables Financing Subsidiary), or a Permitted Receivables Financing Subsidiary may grant a security interest in, any Permitted Receivables Financing Assets of Parent, the Issuer or any Subsidiary of the Issuer.

“Refinancing” or “Refinance” shall mean, with respect to any Indebtedness or Specified Indebtedness, as applicable, any other Indebtedness or Specified Indebtedness, as applicable, issued (a) in exchange for, or the net proceeds of which are used to, extend the maturity renew, refund, refinance, replace, defease, discharge or otherwise retire for value, in whole or in part, or (b) constituting an amendment, modification or supplement to or a deferral or renewal of such Indebtedness or Specified Indebtedness, as applicable.

“Registration Rights Agreement” means the Registration Rights Agreement, dated as of May 13, 2021, among the Issuer, Parent, the Subsidiary Guarantors and J.P. Morgan Securities LLC, for itself and as representative of the initial purchasers, as such agreement may be amended, modified or supplemented from time to time.

“Reinsurance Entity” means TMUS Assurance Corporation, a Hawaii corporation and any successor thereto.

“Replacement Assets” means: (i) capital expenditures with respect to any assets, (ii) other assets that will be used or useful in a Permitted Business, (iii) all or substantially all of the assets of a Permitted Business, (iv) Voting Stock of any Person engaged in a Permitted Business that, when taken together with all other Voting Stock of such Person owned by the Issuer and its Restricted Subsidiaries, constitutes a majority of the Voting Stock of such Person and such Person will become a Restricted Subsidiary on the date of the acquisition thereof or (v) deposits or payments to acquire FCC Licenses.

“Responsible Officer” means, (i) when used with respect to the Trustee, any officer within the Corporate Trust Office of the Trustee (or any successor group thereto) or any other officer of the Trustee who customarily performs functions similar to those performed by any of the above designated officers and also means, with respect to a particular corporate trust matter, any other officer to whom such matter is referred because of his or her knowledge of and familiarity with the particular subject and who has responsibility for the administration of the Indenture and (ii) as to any other Person, the chief executive officer, president, chief financial officer, chief accounting officer, treasurer or director of such Person, but in any event, with respect to financial matters, the chief financial officer, chief accounting officer, treasurer or director of such Person. Unless otherwise qualified or the context otherwise requires, all references to a “Responsible Officer” mean a Responsible Officer of the Issuer.

“Restricted Investment” means an Investment other than a Permitted Investment.

“Restricted Subsidiary” of a Person means any Subsidiary of the referenced Person that is not an Unrestricted Subsidiary.

“S&P” means Standard & Poor’s Financial Services LLC, a subsidiary of S&P Global Inc., and its successors.

“September 2010 Senior Notes Indenture” means the Indenture, dated as of September 21, 2010, as supplemented by the Second Supplemental Indenture, dated November 17, 2010, among MetroPCS Wireless, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as supplemented by the Fourth Supplemental Indenture, dated as of December 23, 2010, by MetroPCS Wireless, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as further supplemented by the December 2012 Senior Notes Sixth Supplemental Indenture, as further supplemented by the Seventh Supplemental Indenture, dated as of May 1, 2013, among T-Mobile USA, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as further supplemented by the Eighth Supplemental Indenture, dated as of July 15, 2013, among T-Mobile USA, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as further supplemented by that certain Ninth Supplemental Indenture, dated as of August 11, 2014, among T-Mobile USA, Inc., the guarantors named therein and Wells Fargo Bank, N.A., as trustee, as further supplemented by that certain Tenth Supplemental Indenture, dated as of September 28, 2015, among T-Mobile USA, Inc., the guarantors named therein and Wells Fargo Bank, N.A., as trustee, and as further supplemented by that certain Eleventh Supplemental Indenture, dated as of August 30, 2016, among T-Mobile USA, Inc., the guarantors named therein and Wells Fargo Bank, N.A., as trustee.

“Series Issue Date” means, with respect to a series of Notes, the effective date of the Board Resolution, officers’ certificate or supplemental indenture pursuant to which the Notes of such series are first issued.

“Series Issue Date Existing Indebtedness” means, with respect to a series of Notes, the Notes of any series issued under the Base Indenture and in existence on the applicable Series Issue Date for such series of Notes (including the DT Notes) (and any “Exchange Notes” (as defined in the Base Indenture) relating thereto) and, in each case, the related Note Guarantees (other than the Notes of such series issued on the Series Issue Date), including, for the avoidance of doubt, the Existing T-Mobile Unsecured Notes described in clauses (i)-(xvii) of the definition thereof in the case of the 2026 Notes, or clauses (i)-(xx) thereof in the case of the 2029 Notes or the 2031 Notes.

“Significant Subsidiary” means, with respect to any specified Person, any Subsidiary of such Person that as of the end of the most recent fiscal quarter for which financial statements are available, would be a “significant subsidiary” as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities Act, as such Regulation is in effect on April 9, 2020, of such Person.

“Specified Cash Equivalents” means:

“Specified Consolidated Cash Flow” means, with respect to any specified Person for any period, the Specified Consolidated Net Income of such Person for such period plus, without duplication:

Notwithstanding the preceding, the provision for taxes based on the income or profits of, and the depreciation and amortization and other non-cash expenses of, a Subsidiary of the Issuer that is not a Subsidiary Guarantor will be added to Specified Consolidated Net Income to compute Specified Consolidated Cash Flow of the Issuer only to the extent that a corresponding amount would be permitted at the date of determination to be dividended to the Issuer by such Subsidiary without prior governmental approval (that has not been obtained), and without direct or indirect restriction pursuant to the terms of its charter and all agreements, instruments, judgments, decrees, orders, statutes, rules and governmental regulations applicable to that Subsidiary or its stockholders.

For the avoidance of doubt, calculations of “Specified Consolidated Cash Flow” of the Issuer for any period prior to the date of the consummation of the Sprint Merger for purposes of calculating the Debt to Cash Flow Ratio shall be on a Pro Forma Basis.

“Specified Consolidated Indebtedness” means, with respect to any Person as of any date of determination, the sum, without duplication, of (i) the total amount of Specified Indebtedness of such Person and its Subsidiaries described in clauses (a)(1) and (2) (excluding, for the avoidance of doubt, surety bonds, performance bonds and similar instruments) of the definition of Specified Indebtedness, determined on a consolidated basis, to the extent required to be recorded on a balance sheet in accordance with GAAP, including, without duplication, the outstanding principal amount of the Notes; provided that Specified Consolidated Indebtedness shall not include (w) Specified Indebtedness incurred in connection with any Permitted Tower Financing or other special purpose entity financing (other than Specified Indebtedness incurred by a Permitted Spectrum Financing Subsidiary, including the Existing Sprint Spectrum-Backed Notes), (x) obligations in respect of letters of credit, except to the extent of any unreimbursed amounts thereunder or (y) Specified Indebtedness constituting Financing Lease Obligations, purchase money debt or other similar Specified Indebtedness.

“Specified Consolidated Interest Expense” means, with respect to any Person for any period, the sum of, without duplication:

“Specified Consolidated Net Income” means, with respect to any specified Person for any period, the aggregate of the Specified Net Income of such Person and its Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that:

“Specified Fair Market Value” means the value that would be paid by a buyer to an unaffiliated seller, determined in good faith by the Issuer’s Board of Directors or a senior officer of the Issuer, which determination shall

be conclusive; provided that any sale, lease, license