Like many others apparently I am experiencing battery life issues on my 4 with iOS 6. I was at 60% by 2pm today. Just ran into a friend, same issues, 60% by 3pm. I was listening to streaming earlier, he was not. I've switched location services off to see if that helps. If that's the case it's similar to when iOS 4 first came out. Same bug? My iPad does not have the same issue; it's wifi only.