Has iOS 10.1 improved battery life? On my iPhone 6s, the battery life is noticeably worse after upgrading to iOS 10. I'm currently on 10.0.2, and I have about 5-6 hours of usage depending on how much I use Safari. Before iOS 10, I had about 7-8 and more. Also, I have seen reports that there is a bug in iOS 10.1 that erases data from the Health app. I wonder how common the problem is and if there is a way to predict if my device is going to be affected. I use Health app a lot, and I would hate to lose a couple of years of my health data.