Go to Settings > Messages > Send & Receive and sign out of your Apple ID. Then sign in again.
Hopefully that will return (this) iPhone number to your list.
Also see:
Add or remove your phone number in Messages or FaceTime - Apple Support
Go to Settings > Messages > Send & Receive and sign out of your Apple ID. Then sign in again.
Hopefully that will return (this) iPhone number to your list.
Also see:
Add or remove your phone number in Messages or FaceTime - Apple Support
Go to Settings > Messages > Send & Receive and sign out of your Apple ID. Then sign in again.
Hopefully that will return (this) iPhone number to your list.
Also see:
Add or remove your phone number in Messages or FaceTime - Apple Support
I accidentally deregistered my phone number from imessage. I want to register it again. Help