My battery life on my iphone 5 is horrible. Background apps always off. Location services are mostly off except what is necessary. Notifications limited. Brightness down low. But one exchange account (down from two). Messaging, emailing, browsing, and etc but nothing excessive. Some music streaming. No video or games. Do other iOS7, iphone5, and exchange account (with push on) have such poor battery life (dead by 3pm after being charged at 8 am)?