DCM Ntt Docomo, American Depositary Shares (delisted)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Information furnished in thi s form:

Table of Contents

NTT DOCOMO, INC.

President and CEO: Kazuhiro Yoshizawa

Tokyo Stock Exchange: 9437

New York Stock Exchange: DCM

February 23, 2018

DOCOMO to Submit an Application for a Plan to Establish 1.7GHz Band and 3.4GHz Band Specified Base Stations

NTT DOCOMO, INC. (“the Company”) announced that on February 23, 2018 its Board of Directors resolved to submit an application for a plan on February 26, 2018 to establish Specified Base Stations in connection with the “Acceptance of Applications for Certification for Establishment Plans for Specified Base Stations for Diffusion of 4G Mobile Communications Systems” announced by the Ministry of Internal Affairs and Communications on January 26, 2018.

(The Company has announced its intention in its previous release dated December 11, 2017 entitled “DOCOMO to begin considering submitting an application for a plan to establish 1.7GHz Band and 3.4GHz Band Specified Base Stations.”)

If the application is approved, based on the proposed guidelines* ¹ announced by the Ministry of Internal Affairs and Communications, the Company estimates that it will incur up to 273 billion yen* ² in expenses required for the migration of the licensees currently using the relevant frequency bands and other required related expenses.

* ¹ Provision of Guidelines Concerning Establishment Plans for Specified Base Stations for Diffusion of 4G Mobile Communications Systems (Notification No. 34 of the Ministry of Internal Affairs and Communications, 2018)

* ² According to the guidelines mentioned in * ¹ above, the maximum possible migration cost is as stated below.

The Company’s expenses are dependent on the number of frequency bands that are certified and the number of certified operators, and at this point in time, the Company predicts that it will incur the maximum possible expense of 273 billion yen.

1.7GHz: Maximum amount of 211 billion yen to be borne by a maximum of 3 operators

3.4GHz: Maximum amount of 62 billion yen to be borne by a maximum of 2 operators

For further information, please contact:

Investor Relations Department

NTT DOCOMO, INC.

Tel: +81-3-5156-1111

About NTT DOCOMO

NTT DOCOMO, Japan’s leading mobile operator with over 75 million subscriptions, is one of the world’s foremost contributors to 3G, 4G and 5G mobile network technologies. Beyond core communications services, DOCOMO is challenging new frontiers in collaboration with a growing number of entities (“+d” partners), creating exciting and convenient value-added services that change the way people live and work. Under a medium-term plan toward 2020 and beyond, DOCOMO is pioneering a leading-edge 5G network to facilitate innovative services that will amaze and inspire customers beyond their expectations. DOCOMO is listed on stock exchanges in Tokyo (9437) and New York (DCM). www.nttdocomo.co.jp/english .