ESG Approach Continued Stakeholder Engagement As the Un-carrier, we changed the wireless industry by listening and responding to our customers. We take the same approach to inform our ESG strategy by understanding what is important to our key stakeholders—customers, employees, community partners, suppliers, and shareholders. By gathering input through a variety of formal and informal channels, we can better understand what our stakeholders care about and where they see us having the greatest impact and influence. This helps better align our actions with the priorities most relevant for our industry and our business. ESG MATERIALITY ASSESSMENT One of the most important tools we use to listen to our stakeholders is a third-party ESG materiality assessment. Conducted every couple of years, this assessment directly asks our leaders, employees, customers, and other key stakeholders to rank the ESG issues they care about and tell us what topics they think are most important for T-Mobile to address. See our most recent ESG materiality assessment . SHAREHOLDER ENGAGEMENT T-Mobile believes in frequent, consistent, and transparent communication with shareholders. Our senior management and investor relations team engage extensively and regularly with shareholders on topics that include ESG matters. Engagement takes place through one-on-one conversations and group meetings, major industry conferences, quarterly earnings, and through T-Mobile’s first Analyst Day, which we hosted in March 2021. THE ENVIRONMENT THE NUMBERS AND SMALL PRINT OUR GOVERNANCE OUR COMMUNITIES OUR PEOPLE 2021 CORPORATE RESPONSIBILITY REPORT 8 OUR COMPANY EXTERNAL DIVERSITY AND INCLUSION COUNCIL T-Mobile partners with our External Diversity and Inclusion Council to help guide and support our Equity In Action (EIA) objectives. The Council includes leaders from the National Urban League, League of United Latin American Citizens, National Action Network, Unidos U.S., OCA-Asian-Pacific American Advocates, Asian Americans Advancing Justice, Human Rights Campaign, National Organization on Disability, National Association for the Advancement of Colored People, National Diversity Coalition, and Multicultural Media, Telecom and Internet Council. EMPLOYEE RESOURCE GROUPS AND LOCAL DE&I CHAPTERS The passionate and dedicated volunteer leaders of our Employee Resource Groups (ERGs) identify diversity, equity, and inclusion (DE&I) opportunities where our company can make the biggest impact. T-Mobile has six ERGs with four sub-affinity groups and 50+ local DE&I Chapters around the country. In addition to hosting events, these groups provide a forum for ongoing dialogue and feedback on important issues to ensure that diverse voices across the company are heard. COMMUNITY ENGAGEMENT Community engagement and feedback is important to our business. That’s why we work to foster strong relations with local communities and external partners so that we’re informed of critical issues impacting our customers, company, and industry. By consulting with local officials, community partners, and industry associations about our business and potential impact, we can incorporate feedback into key initiatives and champion change where it’s needed most.