Topic SASB Code Requested Metric 2021 Response Data Privacy T C -T L-2 2 0 a .1 Description of policies and practices relating to behavioral advertising and customer privacy The T-Mobile Privacy Center houses our Privacy Notices about our privacy practices for consumers. Here consumers can find the choices they have over the use of their personal data and our Privacy Notice describing what data we collect, how it is used, when it is shared, how we retain and protect it, and other privacy safeguards. See the T-Mobile Privacy Notice for how the company collects, uses, shares, and protects personal data. T-Mobile has policies and practices in place for data handling and to govern the data lifecycle including the use of Privacy by Design principles and processes to evaluate new projects using Privacy Impact Assessments. We don’t knowingly collect data from or about children without the permission of their parent or guardian. When we do collect that data, we might do it directly, like when they sign up for a service. We might also collect it automatically if a child uses the products or services we offer. See our Children’s Privacy Notice for more information. The T-Mobile Privacy Center gives consumers easy to access information concerning behavioral advertising and their choices. This includes the choices consumers have over the use of their personal data for relevant advertising and data analytics and reporting. For more information see our Advertising and Analytics article . For relevant ads, T-Mobile will use and analyze data from your device, and usage data generated by use of T-Mobile products and services, and sometimes data from third-party partners, to create inferences for our own and third-party advertising until customers tell us not to use it. This data helps us understand more about user interests (e.g. sports enthusiast, loves cooking, etc.). This data does not directly identify users. T C -T L-2 2 0 a . 2 Number of customers whose information is used for secondary purposes The number of customers whose information is used for secondary purposes varies by product as consumers may opt out of these uses. For example, we offer consumer choices about data use for analytics and reporting or relevant advertising. We publicly disclose information on the types of secondary uses in our Privacy Notice as well as the number of requests we’ve received from customers to access or delete their personal data, or opt-out. T C -T L-2 2 0 a . 3 Total amount of monetary losses as a result of legal proceedings associated with customer privacy For purposes of reporting this metric, we’ll report on regulatory fines or legal settlements for matters that have a material impact on our operations, or which we’d otherwise disclose to investors pursuant to SEC guidance. We do not, as of this report, have any material monetary loss as the result of litigation or regulatory investigations concerning our processing of consumer data. T C -T L-2 2 0 a . 4 (1) Number of law enforcement requests for customer information (2) Number of customers whose information was requested (3) Percentage resulting in disclosure T-Mobile discloses the number of law enforcement requests for customer information and the number of requests that were rejected, received no response, or received a written explanation of why T-Mobile was unable to respond in whole or in part. For the latest annual figures, visit our website to view the most current annual Transparency Report. T-Mobile releases customer records to third parties only when legally authorized or compelled to do so. Our Legal and Emergency Response team relies on Federal and State statutes and regulations when determining appropriate compliance. The Legal and Emergency Response Specialists are trained to analyze legal demands and make a determination regarding appropriate compliance. Generally, T-Mobile notifies customers of third-party legal demands only if required by law or contract to do so. T-Mobile does not measure the number of individual customers whose information is requested. SASB Index Continued 2021 CORPORATE RESPONSIBILITY REPORT OUR PEOPLE OUR GOVERNANCE OUR COMMUNITIES 89 OUR COMPANY THE ENVIRONMENT THE NUMBERS AND SMALL PRINT