HT4319: iOS: Using FaceTimeLearn about iOS: Using FaceTime
Currently Being ModeratedMay 2, 2013 12:34 PM (in response to vandyjay)
Facetime will only work on cellular when, 1) you have it turned on it settings, 2) the carrier supports it.
If you have it turned on in settings and it is activated, then I would contact the carrier and see what the problem might be at their end.
Currently Being ModeratedMay 7, 2013 1:29 PM (in response to vandyjay)
The only support document regarding troubleshooting Facetime is http://support.apple.com/kb/TS3367
User troubleshooting on the phone is restart, reset, restore from backup, restore as a new device.