I keep getting notifications and see in my recent calls that I've missed FaceTime audio calls from one of my coworkers, but he hasn't contacted me that way in over a month. Better still, one of the calls was logged at the same time he was in the air en route from Orlando to LA, and he wasn't using on-board wifi. What's more, my phone hasn't actually rung once, and there's no evidence in his call log of attempting to call me. Thoughts, anyone? Thanks!