I think there is some foul play occurring in iOS that Apple have implemented on purpose. I'm talking about "usage" and the fact it goes up in standby when you're doing NOTHING at all - just to make it clear it goes up doing NOTHING at all so before the inevitable chorus of "but music counts or background stuff" - NOTHING AT ALL, NO MUSIC IS PLAYING! Why would Apple do this on purpose? Well it's as a very clever ploy by Apple for a multiple of reasons - 1. Users think x iOS patch "fixed" their battery issues 2. Users are fooled into thinking their battery life is amazing 3. Reviewers are fooled into writing good reviews about battery life Don't believe me? Well try it yourself - Charge your iPhone to 100%, unplug it, check "usage" (will be at 0) then put it into standby and go to bed. In the morning your "usage" will have gone up maybe 30 mins, maybe 60 mins, maybe more - I like to call this "phantom usage" because it just appears from nowhere.