T-Mobile has suffered some of the largest consumer data breaches in US history — including a 2021 breach affecting 76 million customers and a 2023 breach affecting 37 million — meaning the promise of 'reasonable security measures' in this notice has historically not been sufficient to protect customer data from large-scale exposure.
T-Mobile collects extensive personal data including your real-time location, call and text metadata, device identifiers, financial information, and inferred behavioral profiles, and shares this data with advertising partners and affiliated companies for targeted marketing purposes. This means your daily movements, communication patterns, and financial behavior may be used to build a commercial profile about you without your active knowledge. You can opt out of data sharing for advertising purposes and submit data access or deletion requests by visiting t-mobile.com/privacy-center or calling 1-800-937-8997.