If you’re trying to change your call ID settings but your device isn’t allowing you to, we have some handy codes that you can add in front of the number you’re calling to enable and disable your caller ID:
To deactivate call ID and hide your number, use the code #31# before the number you want to dial.
To reactivate your call ID and display your number when you make calls, use the code *31# before the number you wish to call.