FaceTime Failed: Person Not Available
Solution 1:
According to Apple, some of the symptoms are:
- When you are calling someone on FaceTime, the number on their screen is not your number.
- People are unable to initiate a FaceTime call with you.
- After installing a new carrier settings update, FaceTime does not activate.
How to fix:
- In Settings > Phone, turn FaceTime OFF and turn it back ON again
- Go to Settings > General > Reset > Reset all settings
- Done
Solution 2:
Also be sure that BOTH devices are on wifi, not just the iPad.