This last step isn't QUITE as simple as the instructions would lead you to believe. Your replacement display assembly will not have a replacement front frame--the piece that the motherboard assembly and rear case screw onto--so you need to remove the broken display glass from the front frame. Get the hairdryer back out; it's attached with adhesive. If your display was shattered, it won't come easily and you're going to be picking pieces out of the frame. When you replace the display, you will no longer have enough adhesive on the frame to hold the display assembly to it. After thinking about it, I just stuck it on with super glue. I figured, the phone is three years old and I've already beaten the crap out of it. By the time I might need to change out the display assembly again, it will probably be broken in ten other ways. I've added another year or so to its life with this repair, and that's worth it.

I did this repair on a Droid Razr model xt912. My version has a plastic shield over the battery connectors; the shield is part of the rear case, so I had to do steps 6-9 before I could do steps 4 and 5.