Your iPhone must use the same iCloud and FaceTime account.
- i have solved this using the following step
- Link Your Phone Number: On your iPhone, go to Settings > FaceTime and look at the "You Can Be Reached By FaceTime At" section. Ensure your actual phone number is checked, not just your email address.
when i select my phone number under FaceTime - you can be reached by FaceTime at, the loading sign beside my number keep loading? Solved by:
- Go to Settings > Apps > FaceTime and toggle FaceTime OFF.
- Go back, tap Messages, and toggle iMessage OFF.
- Restart your iPhone completely.