I am not sure if this is a common issue or not. I have two Ipad2's and it appears as though this is only occurring on one of them. When my ipad2 is put to sleep, and is sleeping for a few hours, an incoming FaceTime call will not wake it up. I get no indication that I have missed an incoming call, the screen does not turn on, ect. I spent about 45 minutes on the phone with Apple tech support and they said that they have never heard of this issue. I went through all of the settings with them to try to fix the issue. Anyone else have this issue? Thanks for any input.