I'm running iOS 8.4.1 which has a massive battery bug, the battery drains very fast that I cannot see the changing numbers "percentages". I had iOS 9.1 beta before but the battery was very bad and phone sometimes also heat up in an unusable way. I heard about iOS 9.2 beta and I wanted to know whether it's better or not, and can it stay for a whole day? I hope the heating issues are resolved and that the battery is good and usable.