T-Mobile is the only US wireless provider to receive Ethisphere Institute award

Bellevue, Washington — March 7, 2016 — T-Mobile (Nasdaq: TMUS) announced today it has – once again − been recognized as a global leader in defining and advancing the standards of ethical business practices as a 2016 World’s Most Ethical Company® by the Ethisphere Institute. This marks eight consecutive years T-Mobile has been the only US wireless provider to receive this award for aligning principle with action, keeping trust part of its corporate DNA, and shaping future industry standards by creating the gold standard.

“We are dramatically changing an industry and our employees make sure every day that we’re doing it the right way,” said John Legere, president and CEO of T-Mobile. “I’m not surprised -- but very proud -- that T-Mobile is the only US wireless provider on the list.”

As America's Un-carrier, T-Mobile has shaken up the wireless industry, freeing customers from onerous contracts, packing in more services like free music and video streaming, and unleashing more ways to utilize its incredible service. Millions of people have joined the revolution: T-Mobile had 33 million customers before launching its Un-carrier initiatives in 2013 and surged to more than 63 million in 2015!

The World's Most Ethical Company assessment is based upon the Ethisphere Institute’s Ethics Quotient™ (EQ) framework developed over years of research and vetted and refined by the expert advice from Ethisphere’s World’s Most Ethical Company Methodology Advisory Panel. The EQ offers a quantitative way to assess a company’s performance in an objective, consistent and standardized way. The information collected provides a comprehensive sampling of definitive criteria of core competencies, rather than all aspects of corporate governance, risk, sustainability, compliance and ethics.

"Companies rely on Ethisphere to continually raise and measure the standards of corporate behavior. Those that demonstrate leadership in areas like citizenship, integrity and transparency create more value for their investors, communities, customers and employees, thus solidifying a sustainable business advantage," explained Ethisphere’s Chief Executive Officer, Timothy Erblich. "Congratulations to everyone at T-Mobile for being recognized as a World's Most Ethical Company."

The full list of the 2016 World's Most Ethical Companies can be found at worldsmostethicalcompanies.ethisphere.com/honorees.

About T-Mobile

As America's Un-carrier, T-Mobile US, Inc. (NASDAQ: TMUS) is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The Company's advanced nationwide 4G LTE network delivers outstanding wireless experiences to more than 63 million customers who are unwilling to compromise on quality and value. Based in Bellevue, Washington, T-Mobile US provides services through its subsidiaries and operates its flagship brands, T-Mobile and MetroPCS. For more information, please visit http://www.t-mobile.com.



About the Ethisphere Institute

The Ethisphere® Institute is the global leader in defining and advancing the standards of ethical business practices that fuel corporate character, marketplace trust and business success. Ethisphere has deep expertise in measuring and defining core ethics standards using data-driven insights that help companies enhance corporate character. Ethisphere honors superior achievement through its World’s Most Ethical Companies® recognition program, provides a community of industry experts with the Business Ethics Leadership Alliance (BELA) and showcases trends and best practices in ethics with the publication of Ethisphere magazine. More information about Ethisphere can be found at: http://ethisphere.com.

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Media Contacts

T-Mobile US Media Relations

MediaRelations@T-Mobile.com



Ethisphere Media Contact Clea Nabozny

480.397.2658

Clea.Nabozny@ethisphere.com