OUR COMPANY OUR GOVERNANCE OUR PEOPLE OUR COMMUNITIES THE ENVIRONMENT THE NUMBERS AND SMALL PRINT Health, Safety, and Wellness Benefits Tailored to Our Employees Our employees take care of our customers, and we want to take care of them! All of our part-time and full-time employees— from frontline to executives to back-office employees—have access to the same offerings, including health benefits . v In 2021, we enhanced a range of benefits across the company to meet the diverse needs of our employees —from mental health benefits to higher hourly wages and family planning and reproductive health services. A Focus on Our Frontline It takes mastery and commitment to be part of the best customer care and retail team in the history of wireless. Today, T-Mobile frontline staff support not only our wireless, wireline, and accessibility businesses, but also emerging products and services divisions. To reflect the growing expectations and experience required of our frontline teams, we implemented a nationwide minimum pay of at least $20 per hour. This applies to every single employee regardless of role, or full-time or part-time status. And with total compensation—such as 401K matching and generous stock options—factored in, our starting hourly rate for all employees effectively rose to over $22 per hour. Specific to our care team, this represents an increase in total compensation up to 19% for over 12,000 members. Helping resolve customer pain points is hard work! So we added 15-minute paid wellness breaks to the daily schedule of all customer experience center staff in 2021. Coupled with programs like our Parent Forums and financial literacy courses, our wellness initiatives help ensure our employees feel supported and equipped to tackle challenges inside and outside of the workplace. Helping People Stay Safe Through the Pandemic We continue to navigate the pandemic together— as One Team—and have implemented various measures to keep our T-Mobile community—our employees, our families, and our customers—safe. It’s been a journey, to say the least, and we’ve been inspired by our employees’ resilience, commitment, and passion in these truly unprecedented times. Information about health and safety resources and policy changes is communicated to all employees regularly through multiple channels, including our Stay Healthy Together internal website. This centralized hub provides the latest updates related to COVID-19, resources to support employees, and guidance to help us all work toward a new, better normal. We also continued our educational series, COVID Connect, with Dr. Vin Gupta, a Critical Care Pulmonologist and Assistant Professor of Health Metrics Sciences at the University of Washington. The series fosters ongoing conversations with a credentialed health expert and our employees on key COVID-related topics. T-Mobile also works closely with Dr. Gupta on options and critical decisions for our business to keep our employees, customers, and communities safe. 2021 Employee Benefits Highlights Increased free mental health visits from 5 to 10 on a per incident (not per year) basis Rolled out new benefits in response to employee requests, including up to three weeks paid leave to care for a family member Launched a diabetes program that includes personal diabetes coaching and free equipment in response to worsening diabetes through the pandemic Improved our short-term disability coverage and bonding periods related to childbirth Offered benefits that address a wide range of family planning and reproductive health services Made big changes to our prescription benefits, including adding an innovative program that provides specialty medications at no cost to the employee, which are often prohibitively expensive Partnered with healthcare providers to roll out a broader set of services via virtual care , at lower cost to employees Enabled employees to purchase long-term care plans in case they need it later in life Included in Comparably’s Best Perks and Benefits list for four consecutive years v Excludes interns who are classified as temporary employees. 2021 CORPORATE RESPONSIBILITY REPORT 38

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