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iPhone 4s Call Failed

I am with tmobile and have the iPhone 4s, phone displays full signal and has the operator name on screen. Calls fail and no incoming calls can get through. The only way I can fix this is by turning phone off and on. As the phone displays signal as full when it actually is not connected to the network, I can not tell there is a problem until someone tells me my phone is off or I try to make a call and get the call failed message...

iPhone 4S, iOS 7.1.2, Call failed

Posted on Jul 30, 2014 9:44 PM

Reply
3 replies

Aug 2, 2014 2:59 PM in response to wil07223

Hello wil07223


If you are having issues with phone calls, then check out the troubleshooting in the article below to get it working again.


iPhone: Troubleshooting issues making or receiving calls

http://support.apple.com/kb/TS3406


Resolution

Follow the steps below to resolve this issue. Please test after each step.

  1. Toggle airplane mode: Tap Settings > Enable Airplane Mode, wait five seconds, then turn off airplane mode.
  2. Check your phone settings:
  3. Ensure that your software is up to date:
    1. Check for a carrier settings update.
    2. Check for an iOS software update.
      Note:
      Some updates may require a Wi-Fi connection.
  4. If the iPhone has a SIM card, reseat the SIM card.
  5. If the iPhone 4 or iPhone 4s is on the Verizon network, dial *228 from the iPhone and select option 2 to update the Preferred Roaming List (PRL). The PRL determines the cellular towers the phone uses for cellular service, selecting those with the best signal strength.
  6. Reset the network settings: Tap Settings > General > Reset > Reset Network Settings.
  7. Try to make or receive calls in another location.
  8. Attempt to isolate to one network band:
    • If you're having the issue on LTE, disable LTE, if possible, and try again.
    • If you're having the issue on 3G/4G, disable 3G/4G, if possible, and try again.
  9. Contact the carrier to check the following:
    • Your account is properly configured to use the specific iPhone that has the issue.
    • There are no localized service outages.
    • Your account doesn't have a billing-related block.
    • Your calls don't have errors on the carrier system.
  10. Restore the phone as new.

If the above steps don't resolve the issue, go to an Apple Retail Store, carrier, Apple Authorized Reseller, or contact AppleCare to send the phone in for service.


Regards,

-Norm G.

iPhone 4s Call Failed

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