After upgrading my wife's iphone 5 to iOS 7.0.4 the phone will shut itself off at about 23% battery charge. It does this pretty consistently even after multiple reboots. Additionally, when plugging the phone in and restarting it, the battery meter jumps to 74%. This behavior is very strange as the battery lasted all day long with an accurate meter while on iOS 6 a week ago. Is this behavior typical of 7.0.4? I'm hesitant to replace the battery as it worked as expected a week ago.