I have replaces my iPhone 4 with an iPhone 5, but I want to start developing Apps. My 4 makes a perfect test bed.
The repair went great, except that Apple used so much adhesive on the battery I broke one of the two opening tools. Overall a very easy process,coming from someone who has never opened an electronic device. The screwdrivers magnetized, so my over sized American hands were no issue with the freakishly small Asian screws!
Make the opening tools out of stronger plastic (of course for $2.95, should I even complain?!?)