Instruction I:
1. Hold down the Power button in order for the menu to show on screen.
2. Choose the Power off option.
3. After a couple of seconds, hold down the Power button again. Your phone will turn back on. Voila.
Instruction II:
1. Hi. Please, remove the phone's back cover and battery.
2. Spend five seconds on contemplating the beauty of the world. Afterwards, put the phone back together and press the Power button. Well done, the soft reset is complete.