12 Methods to Fix T-Mobile Error 111

T-Mobile error 111 might occur due to the bad configurations of network-related modules of the phone. The network configurations causing the error might range from a VPN to problematic RCS modules. The problem occurs when a user tries to send a text but fails to do so with error 111 on the T-Mobile network. Sometimes, the issue is limited to a particular contact.

In some cases, the error started to occur after a phone’s OS update. The issue is reported on different phone versions/models like iPhone, Android phones, etc. In some instances, the phone’s ability to receive messages is also affected.

How to Fix T-Mobile Error 111

With the involvement of different technologies in the mobile industry, there can be many reasons that may cause error 111 on T-Mobile but we found the following to be the chief responsible for the error at hand:

  • RCS Feature of Your Phone: If the RCS communications between your phone and T-Mobile are glitched out, then that may cause the error 111 as the phone may fail to relay the messages through RCS.
  • 5G Connection Type of Your Phone: You may encounter error 111 if the 5G signals in your area are spotty and break your phone’s regular operation.
  • Corrupt Cache/Data of the Messenger and Carrier Hub Apps: A T-Mobile client might face the error 111 if the cache/data of the Messenger and Carrier Hub apps are corrupt as this corruption can hinder the texting ability of your phone. 
  • Corrupt Network Settings of Your Phone: If the network settings of your phone are corrupt, then that may result in error 111 on your phone as the phone fails to perform the regular network communication.

1. Enable and Disable Airplane Mode of the Phone

A temporary communication glitch might cause T-Mobile error 111 and enabling/disabling the Airplane Mode of your phone may clear the error at hand as the phone’s communication modules are re-established. For elucidation, we will discuss the process of enabling and disabling the Airplane Mode of an iPhone. Before proceeding, make sure there is no outage on the T-Mobile side as it can also cause the error under discussion.

  1. Launch the iPhone Settings and enable Airplane Mode by toggling its status switch to ON.
    Enable Airplane Mode on Your iPhone
  2. Now wait for a minute and then disable the Airplane Mode of your iPhone.
  3. Then check if the T-Mobile 111 error is cleared.

2. Restart Your Phone

Your phone might show the error 111 on T-Mobile due to a temporary glitch in its OS modules and restarting your phone may solve the problem.

  1. Press/hold the power button on your phone and wait till the power menu is shown.
  2. Once shown, tap on Restart and wait till the phone restarts.
    Restart Your Android Phone
  3. Upon restart, check if the phone is cleared on T-Mobile error 111.
  4. If not, power off your phone and remove your SIM from the phone (in the case of a physical SIM).
    Remove SIM Card from iPhone
  5. Now wait for 5 minutes and then put back the SIM into the phone.
  6. Then power on your phone and once powered on, check if its error 111 is cleared.

3. Disable Read Receipts of Your Messages

If your messaging app is configured to send read receipts but your phone or network is having trouble relaying read receipts, then that may result in the T-Mobile error under discussion. In this context, disabling read receipts of your messages may solve the problem.

  1. Launch the stock messaging app of your phone and near the top right, tap on three vertical ellipses.
  2. Now select Settings and open Chat Settings.
  3. Then disable Send Read Receipts by toggling its switch to OFF and steer to the Home screen of your phone.
    Disable Send Receipts for T-Mobile
  4. Now check if the T-Mobile error 111 is cleared.

4. Disable the Phone’s VPN

If your phone is using a VPN, then that can break many of the regular phone’s operations and cause unintended issues like T-Mobile error 111. In this case, disabling the VPN on your phone may clear the T-Mobile error. For illustration, we will discuss the process of disabling the VPN on an iPhone.

  1. Launch the iPhone Settings and select General.
    Open General Settings of iPhone
  2. Now press on VPN or VPN & Device Management.
    Open VPN in General Settings of iPhone
  3. Then disable VPN by toggling its switch to OFF and afterward, check if T-Mobile 111 error is cleared.
    Disable VPN in iPhone Settings
  4. If that did not work and the issue is occurring with a particular contact (or set of contacts), make sure the number of the problematic contact is in proper international format i.e., like 00(number) or +(number) e.g., like 001234567890 or +1234567890, not just 1234567890.
  5. Once the phone numbers are properly formatted, check if that clears the error 111 on T-Mobile.

5. Disable/Enable Wi-Fi and Data of Your Phone

A temporary communication glitch might not let you use your phone properly and can cause T-Mobile error 111. Here, disabling/enabling Wi-Fi and data of the phone may solve the problem.

  1. If your phone is connected to cellular data, check if connecting it to a Wi-Fi network resolves the issue.
  2. If not, launch the iPhone Settings and open Wi-Fi.
    Open Wi-Fi in the iPhone Settings
  3. Now disable Wi-Fi by toggling its switch to OFF and then check if the issue is resolved.
    Disable Wi-Fi on the iPhone and Open Mobile Data
  4. If that did not work, launch iPhone Settings and open Cellular.
  5. Then disable the cellular data and check if the problem is solved.
    Disable Cellular Data on iPhone
  6. If the issue persists, check if enabling back the cellular data clears the error.
  7. If the error still occurs, disable Wi-Fi and cellular data.
  8. Now restart your phone and upon restart, check if the issue is resolved.
  9. If not, check if enabling cellular data and Wi-Fi (one by one) resolves the issue.

6. Disable Wi-Fi Calling and Change the Preferred Network of Your Phone

If the preferred network of your phone is having issues in relaying the text messages to the destination, then that may cause the error at hand. Moreover, if the Wi-Fi calling modules of the phone are interfering with the normal texting on your phone can also cause the problem under discussion. Here, disabling Wi-Fi calling and changing the preferred network may solve the problem. 

  1. Launch the Android phone Settings and open Connections.
  2. Now select Wi-Fi Calling and then disable Wi-Fi Calling.
    Disable Wi-Fi Calling on Your iPhone
  3. Afterward, check if the phone is clear of the error 111.
  4. If not, check if enabling back the Wi-Fi Calling resolves the issue.
  5. If the problem persists, open the phone dialer and enter the following code:
    *#*#4636#*#*
  6. Now hit the call button and open Phone Information.
  7. Then select Set Preferred Network Type and check if setting the preferred network to Wi-Fi Calling resolves the issue.
    Change the Preferred Network on Your Phone
  8. If that did not work, check if setting the preferred network to LTE/cellular clears the T-Mobile error 111.

7. Disable RCS in the Phone’s Settings

RCS (Rich Communication Services) also called Advanced Messaging is a feature used by mobile carriers to provide an enhanced messaging experience to their clients by providing the ability to send larger multimedia files, interactive notifications, etc. If the RCS modules of your phone are glitched out, then that may cause the messaging issue leading to the TMobile error 111. In this scenario, disabling RCS for T-Mobile may clear the error.

  1. Launch the stock messaging app on your phone and open its Settings.
  2. Now select Chat or Message Settings and disable Advanced Messages.
    Disable Advanced Messaging for T-Mobile
  3. Then restart your phone and upon restart, check if the error 111 is cleared.

8. Disable the 5G Connection Type of Your Phone

5G is the latest standard in mobile phone technology but it is still in the early days of development and can cause many unintended issues if a certain 5G standard is not followed. In this context, disabling the 5G connection type of your phone may solve the problem. For illustration, we will discuss the process of disabling 5G on an iPhone.

  1. Launch the iPhone Settings and open Cellular.
  2. Now select Cellular Data Options and tap on Voice & Date.
    Enable Cellular Data Options of Your iPhone
  3. Then select LTE and reboot your phone.
    Open Voice & Data in Cellular Data Options of the iPhone Settings
  4. Upon reboot, check if the error 111 is cleared.
    Set iPhone’s Data to the LTE Mode

9. Disable Dual SIM on the Phone

If you are using a phone with dual SIMs, then that can glitch out the phone’s communication modules and cause the error 111 on T-Mobile. In this context, disabling dual SIM on the phone may solve the problem.

  1. Launch your phone’s Settings and open the SIM Card Manager.
  2. Now disable the other SIM (not the one from T-Mobile) and restart your phone.
    Disable Non-TMobile SIM on Your Phone
  3. Upon restart, check if the 111 error of T-Mobile is cleared.
  4. If not, launch the phone dialer and dial the following code:
    *#*#4636#*#*
  5. Now steer to the Dual SIM Dual Standby and disable it.
  6. Then restart your phone and upon restart, check if the phone is clear of 111 error on T-Mobile.

10. Clear Cache/Data of the Messenger and Carrier Hub Apps

The T-Mobile error 111 might occur if the cache and data of the messenger and carrier hub apps are corrupt as the essential communication modules may fail to execute. In this scenario, clearing caches of the messenger and carrier hub apps may solve the problem.

For elucidation, we will discuss the process of clearing the apps’ caches for an Android phone. Before proceeding, make sure to back up your messages, usually, deleting the data of the messages app does not delete messages but on some phones, this may delete messages.

  1. Launch the Android phone Settings and open Application Manager or Apps.
    Open Apps in the Android Phone Settings
  2. Now select the Messenger app (like Messages) and open Storage.
    Clear Cache of Messages in the Android Phone Settings
  3. Then tap on Clear Cache and hit the back button.
  4. Now open the Carrier Hub app and open its Storage.
  5. Afterward, tap on Clear Cache and then restart your phone.
  6. Upon restart, check if the error 111 on T-Mobile is cleared.
  7. If not, head to the Carrier Hub app in the Application Manager and tap on Uninstall.
  8. Then confirm to uninstall the Carrier Hub app and restart your phone. If you cannot uninstall the Carrier Hub app as the app is a system app, then you may uninstall it through ADB.
  9. Upon restart, check if the T-Mobile error 111 is cleared.
  10. If that did not work, head to the Storage settings of the Messenger app in the Application Manager and again tap on Clear Cache.
  11. Then tap on Clear Storage or Clear Data and afterward, confirm to clear the data of the messenger app.
    Clear Storage of Messages in the Android Phone Settings
  12. Now restart your phone and upon restart, check if the T-Mobile’s 111 error is cleared.

11. Reactivate SIM in the Phone’s Settings

A temporary communication glitch between the SIM in your phone and the T-Mobile’s cell tower could result in error 111. Here, reactivating the SIM in the phone’s settings may solve the problem.

  1. Launch your phone’s Settings and open Connections.
  2. Now select the SIM Card Manager and deactivate your SIM (in the case of dual-SIMs, disable both).
    Disable SIM on Your Phone
  3. Then wait for a minute and activate back the SIM (from T-Mobile).
  4. Once done, check if the T-Mobile error 111 is cleared.

12. Reset Network Settings of Your Phone to the Defaults

You may encounter the error 111 on T-Mobile if the network settings of your phone are corrupt. Here, resetting the Network Settings to the defaults may solve the problem. For illustration, we will discuss the process of resetting the network settings on an iPhone. Before proceeding, make sure to note down the info required to re-setup the network on your phone (like Wi-Fi credentials or OEM’s mobile data modules).

  1. Launch the iPhone Settings and open General.
  2. Now select Reset and then tap on Reset Network Settings.
    Open Reset in General Settings of Your iPhone
  3. Then confirm to reset your iPhone network and once done, set up the network on your iPhone (Wi-Fi or mobile data).
    Tap on Reset Network Settings on iPhone
  4. Now check if the phone is clear of the TMobile error 111.

If none of the above worked, then switching to E-SIM may clear the error 111 as a faulty SIM card can also cause the error under discussion. If that is not an option, check if getting your physical SIM card replaced clears the error at hand. If the issue persists, you may contact T-Mobile support to clear the error.

Kevin Arrows
Kevin is a dynamic and self-motivated information technology professional, with a Thorough knowledge of all facets pertaining to network infrastructure design, implementation and administration. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget.

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12 Methods to Fix T-Mobile Error 111

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