Why does my screen have a vertical stripe?
I just replaced the home button on my iPhone 4. When I put it back together and powered it up, the screen lit up with a vertical bar. The phone looks like it is going through the normal boot process because the vertical bar changes after the Apple symbol would normally go away.
Sound works and so does the touch screen.
I assume that the LCD cable was not connected properly or had debris, but I don't see any. Any advice?
Mike, best advice I can give you at this time, and if the screen worked before, is to double check your work. Make sure that all cables and connectors are seated properly and straight. Make sure you check the contacts as well, get a good light and a magnifying glass to take a look at it. Always double and triple check if it is an error that occurred after repair. Good Luck.
oldturkey, I fear that the cable to the LCD was "injured" when I put the phone back together. I have repeatedly checked the cable and reconstructed the phone only to see the same problem. Looking at the LCD cable, I can see that I bent it badly on one of the reconstructions and there are clear scratches on the cable.
I ordered a new screen, which arrives today. If that fixes it, I will take some pictures of the bad LCD cable as a warning for others.