Ethical Business Practices Continued Encouraging Employees to Speak Up In our Code of Business Conduct, and through our Speak Up Policy , we encourage anyone to report a concern, a possible violation of our policies, or to seek advice on how to implement the organization’s policies and practices for responsible business conduct. We provide employees with means to speak up anonymously and without fear of retaliation through our third-party Integrity Line (online or by phone), by emailing our Compliance & Ethics team, or contacting our Chief Compliance Officer or the Chair of the Audit Committee directly. Our Speak Up Policy outlines how people are protected from retaliation whenever they raise or report suspected misconduct or a potential violation of the law in good faith. Our Commitment to Human Rights T-Mobile is deeply committed to human rights. We believe we have a responsibility to manage our business in a manner consistent with this commitment, and we expect the same of our affiliates, business partners, and their stakeholders. Our Human Rights Statement covers such areas as discrimination, working conditions, and freedom of expression. It is informed by a number of international instruments, including the United Nations Guiding Principles on Business and Human Rights, the United Nations Universal Declaration of Human Rights, and the International Labour Organization’s 1998 Declaration on Fundamental Principles and Rights at Work. Consistent with our commitment to open dialogue and engagement, we consult with relevant stakeholders to understand human rights-related concerns, issues, and opportunities in order to assess and escalate them as appropriate. The leaders of our Human Resources, Corporate Social Responsibility, and Legal Affairs teams are responsible for overseeing the commitments outlined in our Human Rights Statement. Political Engagement Public policy shapes our business landscape every day. Engaging in the political process is an important part of how T-Mobile advocates for our business and our customers. We do so transparently and responsibly through corporate political contributions, contributions from an employee-funded political action committee (PAC), lobbying, and contributions to tax-exempt organizations. Through these efforts we work to support candidates who share T-Mobile’s views on important issues directly related to our business. We annually publish a Political Engagement Report , which chronicles our contributions and lists our trade association memberships. Through these activities, we leverage our powerful brand and scale to deliver more for our shareholders, consumers, and employees. A few bedrock commitments guide our political activities: strict compliance with local, state, and federal laws; bipartisan contributions; and strict adherence to our Code of Business Conduct and our Political Activities and Lobbying policy. Our General Counsel provides an annual report to the Nominating and Corporate Governance Committee on our political contributions and engagement. 2021 CORPORATE RESPONSIBILITY REPORT OUR PEOPLE OUR COMMUNITIES THE NUMBERS AND SMALL PRINT 17 OUR COMPANY THE ENVIRONMENT OUR GOVERNANCE