There have been a few time where after I take the charger out the wall socket, the red light stays on even though it is not in plug. The only way of turning it off is to power the phone off. Does anyone else have this issue?
Are you running the current software on the device? To check use these steps: Home-Menu-Settings-About phone-Baseband version it should end with FA19. If it reads different you can update by Home-menu-Settings-About phone-System updates.
If the software is current you will need to take the phone into your nearest repair center to have it tested.