My white iPhone 4S is excellent... Except for two things. First, the battery, but I'm sure that will be fixed in a future iOS update. Second, I have two (maybe three) defective pixels. One is just below the halfway point on the screen and is stuck on white. Another is right above the halfway point on the screen and is stuck on black. Third, the white paint is chipped by the bottom of the screen, leaving a small black streak about 0.5mm long at the bottom of the phone near the home button. Do you think the second problem (pixels) and the third problem (paint) warrant an exchange? I have a screen protector, and I hesitate to throw it away... Thanks!