I'm not exactly sure what's wrong. A couple weeks ago, my iPhone 4 (CDMA) could last basically the school day 8:00 am - 3:00 pm and even after I got home. Start charging at around 5-6pm. Usage has been the same since (maybe a little bit more) but that shouldn't translate to my battery dying at around 1:00pm. Should I do a full restore? I cleared out mulitasking tray, all the settings are exactly the same since iOS 6.1.