If your device has no signal bars or shows a "no service" error, it can leave you high and dry from your friends and family. We want to fix that.
However, if the phone shows signal bars but does not call, text, or connect to data, then instead see:
- Calling issues
- Not connected to 3G, 4G, or LTE
- No Internet troubleshooting (phones or tablets)
- Text message troubleshooting
If you need help with doing any step, visit the Devices page, select your device, and find the steps.
- Restart the device. Restart your device regularly to reconnect to the network, especially after traveling between towers.
- See the Coverage Map to ensure your area is within T-Mobile coverage.
- If it's not, we cannot provide or guarantee service.
- Visit https://howmobileworks.com, and sign our petition to improve coverage in your local area.
- On My T-Mobile, log in to check that your line is active (or for prepaid lines, it must have a balance).
- Check that Airplane mode is off.
- Change Wi-Fi Calling preferences to Cellular Preferred or Cellular Only.
- This prevents any Wi-Fi Calling issues with interfering with the signal.
- If you only have problems when Wi-Fi Calling is active, follow Wi-Fi Calling problems. instead.
- Turn off Wi-Fi. You'll know you're using T-Mobile network when you no longer see the Wi-Fi icon.
- Check the device Network mode is set to Auto.
- Remove any cases or covers from the device.
- For Apple iPhone:
- Reset network settings. (Settings > General > Reset > Reset Network Settings)
- 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
- Update the device software to the latest version. You can do this over Wi-Fi. Visit the Devices page for current versions and steps.
- Perform a manual network selection, to look for networks your device can connect to. If you see:
- 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, then Contact us to tell us if it helped or not.
- 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 need to check your SIM card when you contact us..
- Remove the SIM card from the device.
- If you see chips or discoloration in the copper plating, we'll need to check your SIM card for replacement when you contact us.
- If it's OK, re-insert it back into the SIM slot.
- Check for signal.
- If the phone still shows no signal bars or shows a "no service" error, contact us.
Have you previously had service in the location where you have problems?
- Yes, normally have service here: Please start by turning your device off and on again, and if it doesn't help, follow No signal steps above to take care of any other potential problems. At the end of the steps, you can contact us to report the problem.
- No, coverage is always poor here: Visit https://howmobileworks.com , and sign our petition to tell local planners and decision makers that you support our network enhancements.