Lower part of screen stopped responding
After 4 months of flawless work, the lower part of the screen (a strip several millimeters from the edge) suddenly stopped responding properly!
E.g., all buttons in this area (including launcher/phone/+ on home screen) either don't work at all, or sometimes activate after a while when strongly pressed with the thumb (orientation doesn't matter).
Just two hours before they responded fine to the index finger.
Also, I've noticed that when I "multi-touch" the lower line in a file browser with two fingers, it works nice! Buttons are too small for that, however
I first tried to restore backup, but it didn't help, of course.
Has anybody had the same problem?? I guess it's a warranty case ...