There's only one button on the front of your iPhone 4 and it's crucial to basically every function that your phone has. Don't give up hope if it stops working though. Fix it yourself with our iPhone 4 Home Button Key! Attached to the connecting flex cable, this button can restore full button-pressing goodness to your iPhone 4. Now breathe a sigh of relief, you can have your iPhone 4 back as good as new in no time at all!