Freak accident with a sandstone drink coaster resulted in dozens of deep scratches to the glass of my iPhone display. The device still worked.. but I could not live with the rainbow effect the display now emitted. I was very glad to find the iFixit website.
Repair went well..took about an hour. Had a little trouble placing the circuit board back in the frame,watch out for the data ribbon cables... but patience paid off. The plastic tools were very helpful. The pictures from the website paid off enormously.
Keep the steps of the repair organized with compartments of a parts tray so as to not get confused when reinstalling all the parts. Use high quality tweezers to hold and move the screws. Magnifying goggles helped me see the small screws and judge their sizes. Don't forget to remove and reuse the home button.