TSYS (MM)

TeleCommunication Systems, Inc. (TCS) (NASDAQ: TSYS), a world leader in highly reliable and secure mobile communication technology, announced it ranked 431 on the Technology Fast 500™, Deloitte's ranking of 500 of the fastest growing technology, media, telecommunications, life sciences and clean technology companies in North America.

The rankings announced today by Deloitte are based on percentage of fiscal year revenue growth during the period from 2005-2009. TCS grew 194 percent during this period.

TeleCommunication Systems' chairman, president and CEO, Maurice B. Tosé, credits the strong revenue growth to the company's leadership in highly reliable and secure mobile communication technology.

"Growing aggressively as a technology company with proprietary intellectual property has been a goal since the company's founding in 1987," said Tosé. "It is gratifying to be recognized in this way as we enter our second decade as a public company, approaching a $400 million revenue run rate while in a very challenging business environment."

"TeleCommunication Systems and the other 2010 Technology Fast 500™ winners forged ahead in a challenging economic environment to realize exceptional growth," said Phil Asmundson, vice chairman and Deloitte's U.S. technology, media and telecommunications leader. "Deloitte commends TCS for this impressive accomplishment."

"TeleCommunication Systems has proved itself to be one of the fastest growing tech companies in North America, and we are proud to honor them as one of the 2010 Technology Fast 500™," said Mark Jensen, managing partner, venture capital services, Deloitte & Touche LLP.

For additional detail on the Technology Fast 500™, including selection and qualifying criteria, visit www.fast500.com.

About TeleCommunication Systems, Inc. TeleCommunication Systems, Inc. (TCS) (NASDAQ: TSYS) is a world leader in highly reliable and secure mobile communication technology. TCS infrastructure forms the foundation for market leading solutions in E9-1-1, text messaging, commercial location and deployable wireless communications. TCS is at the forefront of new mobile cloud computing services providing wireless applications for navigation, hyper-local search, asset tracking, social applications and telematics. Millions of consumers around the world use TCS wireless apps as a fundamental part of their daily lives. Government agencies utilize TCS' cyber security expertise and professional services. Headquartered in Annapolis, MD, TCS maintains technical, service and sales offices around the world. To learn more about emerging and innovative wireless technologies, visit www.telecomsys.com.

As used in this document, "Deloitte" means Deloitte LLP. Please see www.deloitte.com/us/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.

Company Contacts: Tom Brandt Senior Vice President and CFO TeleCommunication Systems, Inc. Tel 410-280-1001 Email Contact Scott Liolios or Matt Glover Investor Relations Liolios Group, Inc. Tel 949-574-3860 Email Contact