Instruction I:
1. First, press'n'hold the Power button until a menu will appear.
2. Second, select the Power off option.
3. Wait for a few seconds and then press'n'hold the Power button until the phone turns back on. Done!
1. Take off your phone's back cover and remove its battery.
2. After five seconds pass, put the battery and the cover back in its place and press Power button.