My iPhone 4G battery died. Wanted to get a cost to replace and found a link to iFixit.com with instructions. Looked easy and cheap so I gave it a try.
Went exactly like the video. Was so easy, i let my 14 year old daughter and 16 year old son do it. Took them 10 minutes. They will probably start changing batteries for their friends.
Watch the video a couple of times in advance. We played it on my ipad as we were fixing, and paused after each completed task. Screws are very small, so work on a clean, solid uncluttered surface. Make sure that the windex has completely evaporated from cleaning the metal parts before closing iphone. Glad i bought the suggested screwdriver kit. Needed both of them and they were magnitized to help remove and replace screws.