1 - 3 hours
The front screen was broken at the bottom left corner and the back was shattered at the bottom center.
Smooth as silk ! The step-by-step instructions with pictures were spot on and very helpful ! Great job, iFixIt !
Have a container for the myriad of tiny screws ! I numbered spots to correspond with the step in the tutorial to help me remember which screw went where.
iPhone 4S Transparent Rear Panel
iPhone 4/4S Liberation Kit
iPhone 4 LCD Screen and Digitizer (CDMA/Verizon)