I wanted to leave this a few months before mentioning it on here because I'd submitted the feedback to Apple and was hoping an update might fix something. But after eight public releases of iOS 11 FaceTime is still killing the battery of my iPhone 7. A 20 minute video call, over WiFi, yesterday took me from 48% battery life to 16%, and leaving me with a burning hot phone. As someone who works abroad I rely on FaceTime so I don't get charged for international calls by my network, but since iOS 11 I can only realistically make one/two FaceTime video calls a day with this battery life. Not a problem with iOS 10. Anyone else having this experience?