The past couple weeks, all of the sudden, I'll have the phone fully charged at night and then the next morning when I wake up and look at the screen, the battery will show 3 bars instead of the 4. It was fine for a few days and then has recently went back to doing this. I was wondering if there was any problems like this with anyone else with this phone or if it was something I might have done and not even realized and how (or if) I could fix it.