My iPhone 4s has a yellow screen

Just got my iPhone 4s. I notice that the screen is NOT as clear as my iPhone 4. The 4s is yellow and blurred, and my older iPhone 4 is clear clean and has that bleach tint (thats how i like it). I tried to tell myself that it's not a big deal, but it's driving me crazy! I just paid over $400 for somehing I am not happy with. Need a solutions to this problem NOW please!