5 - 30 minutes
The Home Button on me Iphone4 was stuck... too much double clicks to access running apps. It was a pain. At the same time, the battery life was lower...
Pretty straight forward thanks to the guides. Killed two birds with one stone: I had to remove the battery to access the Home Button anyway, so I replaced the battery at the same time.
I didn't have to wash the metel-to-metal parts as the guide reccomends... it worked as out of the box when I booted the phone after the surgery. However, I had a bit of trouble with that big screw-in screw that wasn't screwed in enough so I couldn't slide the back cover properly at the end. That was my main issue.
iPhone 4 Replacement Battery
iPhone 4 Home Button Assembly
iPhone 4/4S Liberation Kit