…So, uhm, has someone of you that's using the ringer switch, after replacing the phone or the screen, solved the problem for good? I have got mine replace 6 times by now, and every time, after less than a week of use, the dust returns in the top left corner. It's very frustrating. I'm thinking about replacing it one last time, and just sell this damn thing.
Just sell it. The next owner probably won't look as close as you do.