My unit worked fine for 2 hours, after that when I locked the screen and tried to open the phone again the screen simply died, The OS was still running fine, visible on bluetooth, response on the screen and Nokia Tune while booting. The screen was pitch black with some kind of weird horizontal stripes on it and backlight still on.

I call this the "striped screen of dead"




Tried to flash - no avail. It's now in Nokia repair so I hope they get it fixed soon.