Connecting my cellphone number with FaceTime and iMassage

Hi there Loongie,

If you're having difficulty turning your phone number on for Messages and FaceTime, try these steps to see if they resolve the issue for you: If you can’t turn on or sign in to iMessage or FaceTime on your iPhone - Apple Support

If this behavior persists, you'll want to reach out to Apple Support directly for further assistance. They're best-equipped to take a closer look at the issue and provide some additional guidance. This link will help you get started: Apple Support

Take care.