I replaced the back housing of my 3g, and now the bottom part of my screen won't respond. I would say it's about the bottom .5 cm of the screen. This translates to me not being able to type much in portrait mode, because i can't hit the space bar, or the return button. Which sucks because not all apps let you type in landscape mode. When I replaced the housing, I made sure (or so I thought) to put everything back in the correct order. I did it a second time to make sure. I also took apart the screen, in order to clean it. I have restarted the phone many times. I even restored, then jailbroke again. Any ideas?