I had two stripped screws on the inner casing (both were the type with washers). Two of the final ten you need to remove before you can pop out the screen. They were in the same location, just on opposite sides, very odd. It took me nearly two hours, and multiple different methods to get them out; including the super glue and melted pen cap. I finally had to use my sisters hemostat clamps (thank god for nurses) to grip the washers and turn them. It took a long while, but after much patience it worked. Im sure you could also use a small set of pliers to achieve the same result. I ended up just leaving those two screws out when I reassembled, and my phone works just fine.