iPhone 4 LCD display broke when the phone fell face down onto a concrete floor.
The repair went very smoothly, thanks to the very clear step-by-step guide & template. It took 30 minutes longer than estimated 1 hour, probably because this is my 1st iPhone DIY.
Be careful when reinstalling the display assembly that it does not push the front facing camera out of place. This is due to the bezel (see photo) for the front camera on the rear of the display assembly. I had to redo steps 23-28 before I could reinstall the logic board.