What screen tests? I would love to know how to test.
Just fire up one of the display tester apps in the Play Store. They do various things like check for color/brightness irregularities, etc.
That being said... The unit I have (obtained last friday) has no banding issues, not brightness consistancy issues, no color blotches, no ghosting of the nav bar yet. All in all, I think its a really nice display. Now, I will say this, there ARE some issues with it that are present....
The blue shift. OK, if you tile the thing over 45 degrees off center, yes, there's a blue shift. And if you turn the brightness down to the stops and watch dark stuff, the black levels aren't so great.
But...
I never use my phone at the angle the blue shift is seen. And I also never use my phone at the lowest brightness and I want to, say, watch a video... So both issues are a complete non-issue for me.
So if you like to sneak up on your phone while you watch film noir in a pitch black room while also trying not to draw attention to yourself, maybe this isn't the phone for you.