I bought an iPhone 2G for $70 with a broken home button and a badly cracked glass, the digitizer was working 100%, then I took the phone apart to replace the home button and now the bottom 1/5 of the screen doesn't respond to touch. Could this be a bad connector? Or could it be that when it was dropped it was on the edge of working and opening it was the final straw on the camels back? Man that sounded like a movie ad. I wonder if this is fixable, or am I hopeless on this one?