: Simultaneously press and hold the Home button (front) and the Sleep/Wake button (top).
To perform a hard reset on a "dead" or unresponsive Go to product viewer dialog for this item. Dead Iphone 4 Hard Reset
Use this if the phone won't boot past the Apple logo or is disabled by a passcode. Hard reset iphone 4 : Simultaneously press and hold the Home button
: Let go of both buttons once the silver Apple logo appears on the screen. 2. Factory Reset via Recovery Mode (Erases Data) Dead Iphone 4 Hard Reset