T-Mobile Continues to Lead the Way in Wireless Customer Satisfaction

April 18, 2007

Company Earns Highest Wireless Customer Satisfaction Ranking for Fifth Consecutive Period

Bellevue, Wash. — Apr. 19, 2007

In the constantly changing world of wireless communications, one thing remains the same — T-Mobile provides the highest level of overall customer satisfaction in the industry.

Once again, T-Mobile USA, Inc. is the only wireless carrier that ranks significantly above the industry average in all major dimensions measuring wireless customer satisfaction, according to the J.D. Power and Associates 2007 Wireless Regional Customer Satisfaction Index (CSI) StudySM – Volume 1. For the fifth consecutive reporting period, T-Mobile USA also is the only wireless carrier to rank highest in overall customer satisfaction among wireless telephone users in all six regions surveyed by J.D. Power and Associates.

T-Mobile ranks ahead of all other wireless carriers in the Northeast, West and Southwest regions, an area covering 28 of the 48 mainland states. T-Mobile is ranked highest in a tie in the other three regions: the Mid-Atlantic, Southeast and North Central.

These results are the latest demonstration that T-Mobile continues to set the standard for customer satisfaction in the wireless industry. The highest rankings in customer satisfaction for T-Mobile from J.D. Power and Associates reflect T-Mobile’s ongoing commitment to meeting customers’ needs. Earlier this year, J.D. Power and Associates announced that T-Mobile also ranked highest in Wireless Customer Care for the fifth reporting period in a row.

“Our employees are totally dedicated to helping customers stay connected to the important people in their lives. It’s this day-to-day focus that enables our people to provide the high level of service and superior call quality customers have come to rely on from T-Mobile,” said Robert Dotson, president and CEO of T-Mobile USA. “It is a credit to each and every T-Mobile employee that we have once again been recognized by our customers as the leader in overall customer satisfaction. No other wireless company has ever swept all six regions of the country. For us to now have achieved that accomplishment five times in a row is a remarkable recognition and sign of trust from our customers upon which we will continue to build.”

The 2007 J.D. Power and Associates Wireless Regional CSI Study – Volume 1 is based on responses from 24,545 interviews with contract customers. J.D. Power and Associates measures customer satisfaction based on 42 service-related issues grouped within six key criteria that affect overall carrier performance. These are (in order of importance) call quality, brand image, cost of service, service plan options, billing and customer service. Carriers are ranked in six regions in the United States.

More information about the J.D. Power and Associates study can be found at http://www.jdpower.com.

Lindsay Morio

T-Mobile USA Media Relations



About T-Mobile USA, Inc.

Based in Bellevue, Wash., T-Mobile USA, Inc. is the U.S. wireless operation of Deutsche Telekom AG. By the end of the first quarter of 2010, approximately 150 million mobile customers were served by the mobile communication segments of the Deutsche Telekom group - 33.7 million by T-Mobile USA - all via a common technology platform based on GSM and UMTS, the world's most widely used digital wireless standards. 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 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.