New to T-Mobile? Switching is easy Set up your device Using the app Sprint Migration Center All get started topics Ways to pay your bill All about your bill Line permissions Your T-Mobile ID Your PIN/Passcode All account resources topics T-Mobile network In-flight texting and Wi-Fi Wi-Fi Calling International roaming Mobile Without Borders All network & roaming topics Find the right plan Netflix on Us HotSpot plans Voicemail Use Mobile HotSpot All plans support topics Tutorials Troubleshooting Unlock your device Protect your device SIM card & eSIM All device assistance topics Get T-Mobile for Business Billing and payments Manage your account Orders and shopping Account Hub registration All business support topics

Get help with Caller ID. To supercharge your Caller ID and block unwanted calls and texts, learn about the T-Mobile Scam Shield app.

Steps for all issues

No matter your situation, do the following first:

  1. Restart your device.
  2. Check that your device has the latest software update tutorials.

Incoming Caller ID issues

  1. Make sure Caller ID is enabled. Use the T-Mobile Scam Shield app or use short codes
  2. Uninstall any 3rd party downloaded calling apps or Caller ID apps.
  3. Add the contact to your phone book, and confirm their name is spelled correctly there.
    • If you are roaming on another carrier's network (in the U.S. or internationally), Caller ID may not work as expected.
    • If you have no Caller ID display for any caller, contact us to check that it is on your account.
    • The Caller ID Name field is limited to 15 characters.

If the incoming call shows Unknown or Unknown Caller, the caller's phone or network might be set to hide or block the Caller ID for all calls.


Outgoing Caller ID issues


By default, your outgoing Caller ID number and name will display when the receiving party has Caller ID enabled. If you want to block or hide Caller ID, use short codes.

To check if caller ID is turned on:

  1. Check our Tutorials for steps to turn on or display Caller ID on your device.
  2. If your name has a misspelling or error on all outgoing calls, log into your T-Mobile account to update your Caller ID. 
    • T-Mobile needs to make these changes manually with our Caller ID vendors.
    • Changes take up to 72 hours to complete.

Was this helpful?