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SUPPORT New to T-Mobile? Switching is easy Set up your device Using the app Sprint Migration Center All get started topics Ways to pay your bill All about your bill Line permissions Your T-Mobile ID Your PIN/Passcode All account resources topics T-Mobile Network In-flight texting and Wi-Fi Wi-Fi Calling International roaming Mobile Without Borders All network & roaming topics Find the right plan Neftlix on Us HotSpot plans Voicemail Use Mobile HotSpot All plans support topics Tutorials Troubleshooting Unlock your device Change your SIM T-Mobile eSIM All device assistance topics Account Hub I-Billing Home Office Internet Collaborate Line permissions All business support topics

Check out our interactive coverage map to learn about device compatibility, signal strength, and cellular coverage.

Little is more frustrating than a “no service” error. We'll show you how to troubleshoot signal and service errors and keep you connected with friends and family.

We have you covered, even when you're traveling internationally! Make sure your mobile device is ready for the trip too!