registering phone number to new iphone
Got new iphone a couple weeks ago. moved SIM from old phone. all good. Changed service providers today and phone shows number NOT associated for imessage and facetime.
iPhone 15 Plus, iOS 17
Question marked as
Go to Settings/Messages/Send & Receive, tap on Apple ID and Sign Out. Then go to Settings/FaceTime tap on Apple ID and Sign Out.
Next, restart your phone→Restart your iPhone - Apple Support
Now go back to Settings/Messages and Settings/FaceTime and log in again. This will usually allow you to associate your number to Messages and FaceTime. If it doesn't, plan B is to change your Apple ID password→Change your Apple ID password - Apple Support