T-Mobile today announced that HD Voice is now available on its network nationwide, dramatically improving in-call voice quality for customers with capable smartphones. Customers will hear a more true-to-life voice quality that’s fuller and more natural-sounding with significantly reduced background noise from street traffic, wind and crowd noise. To experience HD Voice, both parties on the call must use capable T-Mobile 4G smartphones such as the HTC One^™ S, Nokia Astound and Samsung Galaxy S^® III on T-Mobile’s HD Voice-enabled nationwide network. T-Mobile is the first U.S. wireless provider to launch HD Voice nationwide.

“T-Mobile is enriching the customer experience on its network with our nationwide launch of HD Voice. In addition, multiple third-party tests have shown that the experience on T-Mobile’s nationwide 4G network rivals major competitors’ LTE networks,” said Neville Ray, chief technology officer, T-Mobile USA. “This year, we’re stepping on the gas again. We are making continued coverage improvements and launching an advanced LTE network that will reach 100 million people by mid-year and 200 million people by end of year.”

4G Network Advancements

T-Mobile’s $4 billion plan to advance its competitive 4G network continues, improving signal strength and in-building coverage and re-tuning its airwaves to launch 4G service in an additional frequency, 1900 MHz, providing a 4G experience to a broader range of consumer devices, including the iPhone. Today T-Mobile is adding new metro areas, including Denver, Los Angeles, San Diego and Virginia Beach, Va. These network enhancements now reach 126 million people in 46 metro areas including major cities such as Atlanta, Boston, Chicago, Dallas, Detroit, Houston, Las Vegas, Miami, Minneapolis, New York, Philadelphia, Phoenix, San Francisco, Seattle and Washington, D.C. T-Mobile’s nationwide 4G network covers 229 metro areas reaching well over 220 million people.

About T-Mobile USA:

Based in Bellevue, Wash., T-Mobile USA, Inc. is the U.S. wireless operation of Deutsche Telekom AG (OTCQX:DTEGY). By the end of the third quarter of 2012, approximately 131 million mobile customers were served by the mobile communication segments of the Deutsche Telekom group — 33.3 million by T-Mobile USA — all via a common technology platform based on GSM and UMTS and additionally HSPA+ 21/HSPA+ 42. T-Mobile USA’s innovative wireless products and services help empower people to connect to those who matter most. Multiple independent research studies continue to rank T-Mobile USA among the highest in numerous regions throughout the U.S. in wireless customer care and call quality. For more information, please visit http://www.T-Mobile.com. T-Mobile is a federally registered trademark of Deutsche Telekom AG. For further information on Deutsche Telekom, please visit www.telekom.de/investor-relations.

Forward-Looking Statements

This news release includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. The statements in this news release regarding the business outlook, expected performance and forward-looking guidance, as well as other statements that are not historical facts, are forward looking statements. The words “estimate,” “project,” “forecast,” “intend,” “expect,” “believe,” “target,” “providing guidance” and similar expressions are intended to identify forward looking statements.

Forward-looking statements are estimates and projections reflecting management’s judgment based on currently available information and involve a number of risks and uncertainties that could cause actual results to differ materially from those suggested by the forward-looking statements. With respect to these forward-looking statements, management has made assumptions regarding, among other things, customer and network usage, customer growth and retention, pricing, operating costs, the timing of various events and the economic and regulatory environment.