they have never been bad
my brothers screen was yellow. after a month of use it looks just as white as my launch iphone 4
its the optical glue or white leds that must be the problem, but look at any month+ used iphone 4s are proof that the yellowing goes away
Yeah, no. The screen doesn't get "better" after use. Not sure how the screen becomes whiter and crisper after a month ?!? It's either a coating problem or a screen issue. The new phone I have appears yellow from different angles as well as blue. My old phone was blue all around.