Call dropped, no record in recent calls
This has happened a couple of times since I upgraded to iPhone 6 with iOS 8. I'll be in the middle of a (usually lengthy) phone conversation when the call cuts out. I try waking my phone up to see if it dropped the call, but the phone is unresponsive for about 10 seconds or so. When it does come to life again, it doesn't say the call was dropped or even that it was made at all; when I go into my recent calls list, it's disappeared completely. This happened just now, with the latest software update installed.
This phenomenon is seemingly random. Has this happened to anyone else? Fixes??
iPhone 6, iOS 8.1.2