Trying to get my iMessage n FaceTime to work
For some reason my iMessages n FaceTime won’t activate n I honestly don’t know why
iPhone 12 Pro, iOS 15
First try
Settings, Messages, Turn off iMessage
Settings, Face Time, Turn off Face Time
Restart the phone.
Settings, Messages, Turn on iMessage, SMS, MMS
Settings, Face Time, Turn on Face Time
Problem activating iMessage
See If you can't turn on or sign in to iMessage or FaceTime – Apple Support (UK)