T-Mobile Named as a 2015 World’s Most Ethical Company

March 09, 2015

T-Mobile continues seven-year run, as only major US wireless provider to receive Ethisphere Institute award.

Bellevue, WA – March 10, 2015 – T-Mobile US, Inc. (NYSE: TMUS) announced today that it has been recognized by the Ethisphere Institute, the global leader in defining and advancing the standards of ethical business practices, as one of the 2015 World’s Most Ethical Companies®.

T-Mobile again joins companies across a variety of different business sectors like pharmaceuticals, retail, transportation and industrial manufacturing. The award highlights T-Mobile’s success in areas of ethics and compliance, corporate citizenship and responsibility, culture of ethics, governance and leadership, and innovation and reputation.

“As the Un-carrier, we’re committed to doing right by our customers and our employees,” said John Legere, president and CEO of T-Mobile. “T-Mobile is fundamentally a different kind of company because we stand up for every US wireless consumer, call out industry practices that are wrong, and work our tails off to make it right! It is that philosophy that drives us, and we are honored the Ethisphere Institute is again recognizing our hard work and continuing commitment to doing things the right way with this award.”

For both consumers and employees, the 2013 launch of the Un-carrier marked the beginning of a change that translated T-Mobile’s values into real benefits that customers loved, such as the elimination of annual service contracts, free data when roaming internationally, the ability to test drive T-Mobile’s network for free, or rolling over unused data. T-Mobile began the Un-carrier in 2013 with 33 million customers and has more than 55 million customers today.

The World's Most Ethical Company assessment is based upon the Ethisphere Institute’s Ethics Quotient™ (EQ) framework that is determined, vetted and refined by expert advice and insights gleaned from Ethisphere’s network of thought leaders and from the World’s Most Ethical Company Methodology Advisory Panel.

“The World’s Most Ethical Companies embrace the correlation between ethical business practice and improved company performance. These companies use ethics as a means to further define their industry leadership and understand that creating an ethical culture and earning the World’s Most Ethical Companies recognition involves more than just an outward facing message or a handful of senior executives saying the right thing,” said Ethisphere’s Chief Executive Officer, Timothy Erblich. “Earning this recognition involves the collective action of a global workforce from the top down. We congratulate everyone at T-Mobile for this extraordinary achievement.”

­­The full list of the 2015 World's Most Ethical Companies can be found at http://ethisphere.com/worlds-most-ethical/wme-honorees/.

About T-Mobile US, Inc.

As America's Un-carrier, T-Mobile US, Inc. (NYSE: 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 55 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 and The World’s Most Ethical Companies Executive Briefing. Ethisphere is also the leading provider of independent verification of corporate ethics and compliance programs. 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