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How to fix T-Mobile Error 111?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

Error 111 is a T-Mobile error code that indicates that the device is not able to connect to the T-Mobile network. This can happen for a variety of reasons, including poor signal strength, a problem with the device's SIM card, or an issue with the T-Mobile network itself.

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1. Restart your device

  1. On your device, go to Settings.
  2. Under "General," tap "Restart."
  3. Tap "Restart now."
  4. Your device will restart and you will be able to fix the error.

2. Check for a system update

  1. Go to the “Settings” app on your phone
  2. Under the “System” tab, tap on “Updates”
  3. Tap on “Check for updates” to begin the process
  4. If an update is available, it will be displayed in the “Available Updates” section
  5. Tap on “Install now” to begin the installation process
  6. Once the update is complete, you will be prompted to restart your phone
  7. Do so and you should now be able to resolve the error 111

3. Reset the network settings

  1. From the home screen, tap Settings.
  2. Under Wireless & networks, tap Network settings.
  3. Tap Reset network settings.
  4. Enter the network password if prompted.
  5. Tap Reset.
  6. Tap OK.
  7. Tap Close.

4. Contact T-Mobile customer support

The first step is to open up the "Settings" app on your phone and scroll all the way to the bottom. There, you will see a section called "Support." Tap on that to open up the support menu. From here, you will need to select "T-Mobile Customer Support." Once you've done that, you will be taken to the T-Mobile support page. From here, you will need to provide your account number, your phone's IMEI number, and your phone's model number. After providing those details, T-Mobile will begin to look for a solution to your issue. Depending on the issue you're experiencing, T-Mobile may ask you to provide additional information. For example, if you're having trouble connecting to the internet, T-Mobile may ask you to provide your WiFi network's name and password. Once T-Mobile has received all the information it needs, it will start to work on resolving your issue. Depending on the issue, this process may take a few minutes, or it may take a few hours. If T-Mobile is unable to resolve your issue, it will send you a replacement phone or a refund.