Long press power button until you get into another menu offering cache partition wipe and other such things (including factory reset so be careful what you push!)
No No No... I think he should hold down the power button, volume up button and the home button until he sees the menu with reboot system, wipe cache partition etc... Use the volume up or down button to scroll to reboot system and hit the power button
Long press power button until you get into another menu offering cache partition wipe and other such things (including factory reset so be careful what you push!)