With iOS 6 and earlier, once my iPhone was fully charged, it would display a "plug" icon, reassuring me that my iPhone was 100% at charge. With iOS 7, it's still on the "thunderbolt" icon and has been for about an hour. It says 100%, though. Has the power plug icon been discontinued in iOS 7 in favor of a static thunderbolt icon when charging/been charged? Hope not, but I could be wrong.