I originally bought a 16gb iPhone 4 and returned it to upgrade to a 32gb model yesterday. I purchased it from one of AT&T's corporate stores. THe representative there quickly quipped that Apple handles warranty repairs. I don't know whether I should call Apple, get to an Apple Store (hour away), or go back to that same store. Anyways, I noticed something was a bit different with the 32gb model I opened (from the box). If I tilt the screen any other way than to the right, the colors are fine... but when I tilt it to one side, it becomes yellow and discolored. It's supposed to be an IPS display. I have an iPad and I can tilt it at any angle and it's remarkable. Really just asking the community for advice on what's the fastest way to get my phone switched out and whether this is just common or not (I'm guessing not common... on account my first iPhone 4 didn't have this issue). Thanks..