In this video a guy is presenting the new iOS 7 whose beta has been released by Apple on 10 June 2013.
I find quite relevant the fact that when the video started, its iPhone 5 battery level was 63% and at the end, after just 10 minutes, it was already 55%. It means 8 percentage points in about 10 minutes which make 48% – let’s say almost 50% – in one hour.
Does it mean that with iOS 7 the battery last only about two hours? Ok, the guy might have an old battery, not fully efficient, but such data are quite scary considering that during the short preso no video have been recorded, no phone calls have been made, no games have been played.