Hello, After reading all these treads about battery problems on 6S, overheating and glitches on 10.2 I am all the time thinking if staying on 9.3.5 was a good or bad idea. On one side iOS 9 is classic and bugless. It's also secure. The best factor I need is battery life and it seems to beat iOS 10.2 all the time. Few YouTube videos of 6 or 5s shows it's worse on new OS. I have Samsung CPU so if it's worse - it's much worse here All apps I need are still supported to 9.3.5 so there is no problems. I hated iOS 10 new Music app, Messages and Mail. Are they fixed - no problems with HTML and preview in new mail? What about notifications - are they still clumsy and can't be sorted by app ? Messages still have multimedia buttons at opening of conversation not only text field?