Unplug charger , Use Root explorer, go to Data / System - Delete Batterystats.bin Now without doing anything else, switch off the phone , remove battery and keep it aside for 3 minutes now put it back on, and without turning the phone on Plug in the charger and wait till it says 100% when it says 100% Remove the charger , Remove the battery, keep it aside for three minutes, Put it back on, Plug the charger again. wait for the battery to say 100% again. do it two or three times, and now switch on. *