The wife has been complaining about her screen protector's state of disrepair for quite some time now so I decided to swap it out for her tonight.
I pull the old one off, clean the screen then apply the new one by going right to left smoothing it on with a straight piece of plastic to remove the bubbles that always seem to show up. It looked pretty damn good I must say.
Then the touch screen stopped working. By "stopped working" I mean the touch functionality did now work whatsoever. I could press on the screen so hard the colors would squish and swirl and still no response even on the calibration screen.
So I pulled it of. Touchscreen works again. I put the screen protector back on but by this point it's got fuzzies and whatnot on the sticky side so I put much less effort into making it look nice applying it only with my finger. There's a few bubbles and lifting near the edges but it was on there. Care to guess what happens now?
If you guessed that it didn't work again, you're wrong. It worked. Calibration went without a hitch and the calibration verification screen that follows did just that, verified that the calibration was good and everything else worked just fine as well.
Needless to say, I'm quite confused as to the cause of the malfunction but am ecstatic that I didn't break my wife's DS.