After having the Lumia 920 since day one, I got some N A S T Y scratched on the lower half of the screen, mainly to the left side. One of them, was so deep, in fact, you could feel the ridge of the scratch. I know how and when the big one occurred. One month ago, I set it down, screen down, not really paying attention, when a co-worker moved to out of the way. I heard a grinding noise when it was done, and sure as ****, I picked it up, and saw the scratches. Coincidentally, I started having battery issues this week, and had he device replaced. The first thing I did, was order a Zagg screen protector. I don't want anymore ugly scratches.