1.open the back cover of phone
2.unplug battery wire connected to circuit board
3.now hold power button for 2min.
4.now connect charger(charger is on) to phone (note battery is unpluged to circuit board)
5.hold power button until there comes vibration and phone powers on.
6. unlock the phone with password and then connect the battery wire to circuit.
7.phone is charging let it charge
8.phone is normal and READY