iPhone: Hard reset
It is inevitable that electronic devices will eventually freak out. If you iPhone ever does, and I’m not saying it will, you may not be able to get it to respond to normal inputs. A combination button press will let you reset the iPhone.
To reset the iPhone, press and hold both the sleep/wake button (on top of the iPhone) and the Home button (centered below the screen) for a few seconds. When you see the Apple logo, you can let go and the iPhone will start back up.





