How do I fix my home button on my iPhone 4?

[Tina Hickman]

The home button on my iPhone 4 won't work at all. I've tried clicking it twice really fast, then slowly. I've held the home button down for, literally, 5 minutes and nothing. Also, since this happened, now I can't turn the phone off.

 

[Reparkable]

Have you restarted the phone?