原帖由： Josh Calvetti ,
While you don't necessarily need to put the foam back on, it certainly is helpful. I would make sure you get everything clicked into place, then turn the phone on without putting the screen back in place- the home button will not be functional at this point. See if the screen responds at all. If you get the screen to work, very carefully put the display back into place. If not, you may have a bad digitizer.