Download screen test, set it to black and go into a dark room.. If yours doesn't show it I'll be surprised. And if it doesn't, there goes peoples theory of "it's just normal for the manufacturing process of these screens".
Why? most people don't hide in dark rooms to use their phones. I guess if you look hard enough you can find fault with any phone. You should see them on the Nexus forum, they are whining about everything too, and that was to be the perfect phone everybody was waiting for.

