Home Button Doesnt Wor

If it's under warranty back up your phone and take it to the Genius Bar at a local Apple Store.

If you're off of warranty go to

Settings> General> Accessibility > and turn on Assistive Touch which gives you a touch HUD for the home button and more.

 

Do what nuckinfutz suggested. I got mine replaced about a month ago because of the home button. It was under warranty (had 5 days left). I did not say anything outrages. He just replaced it with a new one.

 

If it's under warranty, I believe Apple will replace the home button. (Or give you a replacement phone.) If it isn't, you might want to look into independent repair shops. I had my home button replaced for $50 at one of these places.

 

If you have warranty they'll take your word for it even if the button starts working at the Apple Store. They'll replace it for you for free or if you're out of warranty it'll be $149.99 for an iPhone 4 and $199.99 for a 4S.

^ Or like this guy said you can get it fixed for around 40 bucks!