Network connection issues

Learn how to troubleshoot data connection problems.


When you use a high-speed capable device in a 3G, 4G, or 4G LTE area, the device automatically scans for the best available network. The device displays 3G, 4G, H or LTE next to the signal bars when successfully registered on a 3G, 4G, or 4G LTE network.


To fix this issue:

  1. Check the following:
    • The coverage in your area must support 3G, 4G, or 4G LTE.Use our Personal Coverage Check.
    • Your device must supports 3G, 4G, or 4G LTE. Visit the Tech Specs for your device.
    • Your device must have the latest software version.
    • The SIM card must be inserted properly in your device.
  2. Turn off your device.
  3. Remove and re-insert the battery. If the device doesn't have a removable battery, press and hold the power button and volume down button for up to 15 seconds, until the device resets. If you're unsure whether your device has a removable battery, check out your device on the Devices page.
  4. Turn the device back on.
  5. If you cannot connect to 3G/4G/LTE, perform a manual network selection using your device's how tos.
  6. If possible, see if another T-Mobile 3G, 4G, or 4G LTE device in the area is working properly.
  7. If the problem continues, please contact us for additional troubleshooting.