i have phonetools version 4.04 and my phone says charging. but i left the phone hooked up all day. when i unplug the phone from the computer, it says 3 bars and full 6/6 on battery meter. but when the phone is plugged to the computer it says 1 bar on the phone blinking and the words charging. then it says 20% battery on the phonetools screen and 2/6 on the battery meter. i left it hooked up for 6 hours while i was at school.... is it really charging or not?