(Add a + or 011 to the beginning for US numbers.) Include any country codes or area codes.Use the dialer to enter the full 11-digit number, instead of using any saved contacts.Make sure the number you're calling isn't on the device's Block or Spam list.Make sure the number you are dialing doesn't have a 1-700, 1-900, or 976 prefix.Visit the Devices page for current versions and steps.Ĭan't call a specific number or make international calls Update the device software to the latest version.(iPhone only) Reset the network settings ( Settings > General > Reset > Reset Network Settings).T-Mobile can't support calls on other services such as Google Voice. Uninstall downloaded apps such as calling apps all blocking, launcher, and homescreen apps and apps you downloaded around the time the problem started.Turn off Wi-Fi to ensure you're using the T-Mobile network.For additional iPhone-specific troubleshooting steps, visit Apple Support. If you can't make or receive calls or get busy, fast busy, three beeps, three rising tones, or a "call failed" error when you try to call, start with these basic troubleshooting steps. Tip: If you need help with any of the steps in this document, visit our Device tutorials page, select your device, and use the search bar in upper right to find what you're looking for. If your device meets all these criteria, and you're still having calling issues, proceed with the troubleshooting steps below. For information about making international calls, see Make an international call. See Stateside calling & texting services. If you're calling an international number, check whether you have the right features on your account. Wi-Fi Calling preferences are set to Cellular Preferred or Cellular Only to prevent Wi-Fi Calling issues with interfering with your signal. If you have Family Allowances, make sure it isn't blocking calls or has time-of-day blocks set up. Your line is active (prepaid lines must have a balance). Check out Signal issues / no service troubleshooting. If there are fewer, the signal is too low for reliable calls.
Your device shows at least two signal bars. To make sure your device can make and receive calls, check the following:
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