I received this Defy from a friend so that means no warranty here :/
I actually wanted to replace the faulty speakerphone of my Defy.
I proceeded to order a speakerphone piece for my Defy, then when it came it had free tools for use as well.
I then went ahead to take everything out, and replaced the speakerphone.
I then realised that the I lost the part near the LED (proximity sensor?) when I pressed the button on the speakerphone part to release it.
I thought nothing would go wrong, so I went ahead to place everything back, including the touchscreen.
But then I tried screwing the screws back again and realised they could no longer be screwed back into place. I took a closer look and saw that the screws themselves had been "circle"-fied from a hexagon shape, probably friction caused it.
Now I am stuck with a Defy that shorts the screen upon accepting a call (but the speakerphone works) and a thin strip in the touchscreen that doesn't work.