Network or Signal Issues

1. Restart your device and check for signal bars.
2. Change Wi-Fi Calling preferences to Cellular Preferred or Cellular Only to prevent Wi-Fi Calling issues from interfering with the signal.
3. Turn off Wi-Fi to make sure you're using the cellular network.
4. Set the device Network mode to Auto.
5. Remove any cases or covers from the device.
6. (Apple only) Reset network settings (select Settings > General > Reset > Reset Network Settings) and verify the T-Mobile Carrier Settings are up-to-date. You can do this over Wi-Fi. Update your carrier settings on your iPhone or iPad - Apple Support.
   
7. Update the device software to the latest version. You can do this over Wi-Fi.
8. Perform a manual network selection for networks your device can connect to. If you experience:
   • Registered to T-Mobile network, but no signal: The problem is likely low or no coverage. If the coverage map showed good coverage, try switching to 2G or turning off LTE.
   • T-Mobile network is not available: The problem is likely no coverage. If the coverage map showed good coverage, perform a master reset.
   • T-Mobile network is available but cannot connect: We'll need to check your SIM card when you contact us.
   • Network selection gets stuck or gives error: Perform a master reset. If that doesn't help, we'll check your SIM card when you contact us.
9. Check for signal.

If the phone still has no signal bars or shows a "no service" error after you've worked through these troubleshooting steps, contact us from a device that has service, or visit a Metro store.