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If you're unable to make or receive calls, or your calls drop unexpectedly, these troubleshooting tips can help. If you lot're having bug with calls just while connected to Wi-Fi Calling, read no farther and check out Wi-Fi Calling problems instead.

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First things first. To make sure your device can brand and receive calls, check the following:

 Your device shows at least two signal bars. If there are fewer, the indicate is besides low for reliable calls. Check out Signal issues / no service troubleshooting.

 Your line is active (prepaid lines must have a balance).

 If you take Family unit Allowances, brand sure information technology isn't blocking calls or has time-of-day blocks set upwards.

 Wi-Fi Calling preferences are prepare to Cellular Preferred or Cellular Only to prevent Wi-Fi Calling issues with interfering with your signal.

 If you're calling an international number, check whether y'all have the right features on your account. See Stateside calling & texting services. For data virtually making international calls, see Brand an international phone call.

If your device meets all these criteria, and yous're nonetheless having calling issues, go on with the troubleshooting steps below.

Tip: If you need help with any of the steps in this document, visit our Device tutorials page, select your device, and utilise the search bar in upper right to find what you're looking for.

Tin can't make or receive calls

If you lot can't brand or receive calls; or get decorated, fast busy, three beeps, 3 rising tones, or a "call failed" error when you try to phone call, start with these basic troubleshooting steps. For additional iPhone-specific troubleshooting steps, visit Apple Support.

Basic troubleshooting

1. Restart your telephone.
2. Turn off Wi-Fi to ensure you're using the T-Mobile network.
3. Plough on VoLTE.
4. Uninstall downloaded apps such as calling apps; all blocking, launcher, and homescreen apps; and apps you downloaded around the time the trouble started. T-Mobile tin can't support calls on other services such every bit Google Voice. Contact the app provider if necessary.
5. (iPhone but) Reset the network settings (Settings > General > Reset > Reset Network Settings).
6. Update the device software to the latest version. Y'all can practise this over Wi-Fi. Visit the Devices page for current versions and steps.

Can't call a specific number or make international calls

• Brand sure the number you are dialing doesn't have a 1-700, 1-900, or 976 prefix. T-Mobile blocks calls to these numbers.
• Make sure the number you're calling isn't on the device's Block or Spam list.
• Use the dialer to enter the total 11-digit number, instead of using any saved contacts.
• Include any country codes or surface area codes. (Add a + or 011 to the showtime for U.s. numbers.)
• Disable caller ID by dialing *67 before the 11-digit phone number. If the call goes through, your number is blocked to them.

Dropped calls

It is normal for calls to drop later eight hours. Only if your shorter calls drop frequently, try the following:

1. For calls dropping only in specific locations, check out our 4G LTE & 5G Network coverage map to determine the level of signal you should expect.
2. Make certain that the impact screen isn't waking up during the telephone call. It may wake up if your cheek presses the touch screen or your fingers bear on the buttons, like the Finish Telephone call button.
3. Remove any cases or covers from the telephone. Some protective cases interfere with reception.
4. Update the device software to the latest version. Visit the Devices folio for electric current versions and steps.
5. Try calling in a location that dropped your call before to come across if it happens over again.
6. If bachelor, move the SIM carte to another T-Mobile device and encounter if calls proceed to drib when y'all call from that device. This test volition aid Customer Intendance diagnose the problem.

All incoming calls become to voicemail

1. Reset your call forwarding settings:
   • Punch ##004# on the telephone dialer, and press Send to reset decorated, if unreachable, and no reply settings.
   • Punch ##21# on the phone dialer, and printing Send to reset unconditional phone call forwarding settings.
2. Make sure that the number going to voicemail isn't on the device Block or Spam List.
3. Cheque that Call Waiting is turned on in your phone settings.
4. Turn off Bluetooth. If Bluetooth is on, the device may exist trying to send the ring to a paired device, and you may miss it.
5. Check the notification switch on the side of the phone, if y'all have one. It may make the telephone go silent or plow off alerts to anyone who is not a favorite contact, and you may be missing those calls.
6. Call your own number to meet if it rings earlier forwarding to voicemail.
7. If available, move the SIM menu to some other T-Mobile device and take someone call y'all to see whether calls go to voicemail on that device. This test will aid Customer Care diagnose the problem.

Touch tones don't piece of work

If voicemail doesn't or phone systems (IVRs) don't recognize button presses on your device, bank check out your device's bear on tone settings:

1. Turn on touch tones in your telephone settings. Annotation that affect tones may not work if you're on a conference call.
2. For Android devices:
   • Wipe the cache sectionalisation to clear system retention.
   • Clear all app caches.
   • Plow off audible touch tones.
3. Update the device software to the latest version. Visit the Devices page for current versions and steps.
4. Call voicemail or a phone system to test whether impact tones are working as expected. If not, contact us.

Stuck? Contact us

If the phone still can't make or receive calls afterward yous've followed these troubleshooting steps, contact us. Nosotros may need to check your number and the network in your area. If you received fault letters or recordings when trying to identify a call, be prepared to share those messages with the states when you contact us.

If you tin't call, contact usa through chat (message united states), the T-Mobile app , or social (Facebook, Twitter, Google+). Any of our contact options can connect you with someone to await at your account settings and local network details, and file a ticket for any problems.

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Source: https://www.t-mobile.com/support/devices/device-troubleshooting/cant-call-dropped-calls-and-other-calling-issues

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