(Note: I also replaced the bezel/chasis to the phone also while I had the phone open)
After replacing the screen I noticed that a horizontal strip at the bottom of the phone (above the soft keys) is not responding to touch at all. I did a factory reset on the phone and I'm still having this issue. I'm inclined to believe it is a hardware issue.
Any idea what else I can try? I need my phone functioning asap and would rather not return the screen and wait for another.