When your iPhone’s Home button becomes unresponsive or the cables are detached or broken, the Home button has to be replaced. You can take your iPhone back to your cellular provider or the Apple store for repairs, but replacement can be expensive and you may have to wait days or weeks for your iPhone to be fixed. You can save time and money by replacing the Home button yourself, but you should allow several hours to complete the Home button repair. If you are uncomfortable working with electronic components or if you are concerned about voiding your iPhone’s warranty, do not attempt this repair.
Power down your iPhone.
Unscrew the Phillips or 5-point screws from the bottom of your iPhone near the dock connector.
Push the back panel of your iPhone up and away from the dock connector.
Lift the home button ribbon cable retainer out of the case, using the iPod-opening tool.
Pull the home button ribbon cable out of the socket. Remove your old home button from your iPhone.
Insert the new home button into the socket. Route the home button ribbon cable carefully through your iPhone case.