My battery the last couple days has been indicating a 100% charge all day. It also keeps the 100% icon in the status bar. When I try to shut down the phone and restart it I just get an empty battery on the screen. The only way to get it to turn back on is to plug it in, then it changes the battery on the screen to indicate the battery level and it will turn on. Do I have a bad battery, or a bad phone? Has anyone else seen this?