Only one dead pixel, no light bleed, checked at 25, 50, and 100% brightness. I'm astonished. With this many pixels on a new type of screen tech, I figured I'd gave at least a few. I was hesitant to even check and confirm it. Very well done, Samsung and Apple!
For what it's worth, I didn't even find the pixel while I was doing the test. I found it accidentally while typing this, LOL. I can only see it now when I remember where it is and go looking for it.
Edit: Actually, it's just a green sub pixel that's dead, which may be why I didn't catch it. Sneaky little bugger.