How To: Update phone from displaying the wrong phone number
When changing phone numbers, including when you port in your phone number from a previous wireless provider, your phone may show the old phone number. This could impact your ability to use certain services such as iMessage, RCS, and Facetime.
On All Devices
To update the number that your phone shows, you will need to send two text messages following the steps below:
Create a new text message to the following short code: 41111
In the message, type: setup
Create a new text message to the following short code: 40001
In the message, type: sim
Restart your phone
This should resolve the issue with the wrong phone number displaying.
If you are using an Apple device and the above steps did not correct the issue, see below for additional troubleshooting steps.
On Apple Devices
If the steps above did not resolve the issue for your Apple device, try the solution below:
Go to Settings
Tap My Number
Use the delete button to remove the incorrect number