This may be an iOS 7 post but i think the two are related. Lately (around iOS 7 update) my iPhone 5 has been really annoying on battery life. Here are the issues i'm experiencing. 1. Phone will randomly shutoff between 1 - 30% and show out the "need charge" boot screen. 2. The battery will jump percentages so one minute it'll be around 50% and a few minutes later it'll be down to 25%. It's very frequent from 22% down to around 10%. 3. I am forced to use a Mophie Juicepack because the iPhone battery itself will only last half the day even with light use (Bluetooth off, wi-fi on, auto-screen brightness). 4. If i'm charging the phone with a spare battery pack, like Mophie, it'll stop charing at 88% and suddenly say accessory is not supported. I've tried doing a restore to see if the phone is just misreading the battery. I've also tried doing a hard reboot with no luck. Does anybody have other suggestions before I take this to Apple and say "WTF?"