My phone started shutting off for no reason, and sometimes needs 2 or 3 restarts before it stays on. It will then run for a long time. It will actually shut off in the middle of a call, or sending a text. The battery appears to have sufficient charge, but suspiciously the battery meter reads differently when it starts up again. I'm beginning to suspect a bad battery, and that the phone cannot properly measure the remaining charge any longer. When I start the phone up again it does have enough charge to run the phone though, but just a different percentage charge remaining. I wonder if I replace the battery if this would fix the issue. This has been going on for about a week or so. Thoughts?