20 - 30 minutos
My iphone keep shutting itself down even though the battery level is showing 100% charge. My daughter have a friend with the same problem. She found a how-to on yutube and that is how we found ifixit. I ordered the kit. It was shipped the same day.
The repair was a snap. The only problem I had was peeling off tha pesky "do not remove" sticker to get to that one screw.
The screw driver was magnetized which is great, otherwise I would have lost some screw.