I love the changes in iOS10 so far, especially the cards (I know I'm in the minority on that one), but my god what has happened to the battery life?! It was bad before but now it's awful! I installed the OTA update on my 6S while I was at 100%, by the time it was done it dropped to 86%, now I've been listening to music for about an hour and I'm on 67%! I have 1 hour 4 mins usage, 1 hour 20 mins standby. The section that's supposed to show what's using power doesn't seem to be working "Information will be available after using IPhone for a few minutes". It wouldn't index etc... again after an OTA update would it? What could be causing this drain?