About T-Mobile UNSTOPPABLE UN-CARRIER Today, we’re leading the U.S. wireless industry with America’s ONLY nationwide stand-alone 5G network, unmatched value, and unwavering customer love. As we enter a new era of Un-carrier, we are continuing to focus on doing what’s right for our customers and building a more sustainable, inclusive future for all. To learn more about T-Mobile’s economic con tribution and business strategy, view our Annual Report . 108.7M customers Including 646,000 High Speed Internet customers (as of December 31, 2021) THE ENVIRONMENT THE NUMBERS AND SMALL PRINT OUR GOVE RNANCE OUR COMMU NITIES OUR PEOPL E 2021 CORPORATE RESPONSIBILITY REPORT 4 OUR COMPANY * Fastest based on median, overall combined 5G speeds according to analysis by Ookla® of Speedtest Intelligence® data 5G download speeds for Q4 2021. Ookla trademarks used under license and reprinted with permission. ** Based on analysis by T-Mobile of Speedtest Intelligence® data from Ookla® U.S. median 5G T-Mobile speed tests from cities with 2.5GHz compared to mobile Wi-Fi results for Q4 2021. Ookla® trademarks used under license and reprinted with permission. America’s Largest 5G Network Our Extended Range 5G covers 310 million people or 94% of the U.S. population (as of December 31, 2021) America’s Fastest 5G Network* Delivering speeds faster than Wi-Fi to more people than any other wireless provider** Providing services, devices, and accessories across our flagship brand T-Mobile and prepaid brand Metro by T-Mobile Headquartered in Bellevue, WA & Overland Park, KS with corporate offices in Frisco, TX; Atlanta, GA; Reston, VA; and other locations