iPhone 4S Screen
On reassembly, make sure you lift up the power button cable before installing circuit board. I thought I had all of the cables lifted until after getting to step 17 (in reverse) only to find out power cable was under the circuit board. Added 15 minutes to my process.
Use a large white sheet of paper (I taped 4 81/2 x11 sheets of paper together) to place components/screws on. Circle the components/screws and write the step number in the circle. This will make reassembly a breeze.