Just wanted to give some people a quick update on this issue. I got a Verizon iPhone 4 during the Verizon preorder. When I recieved it, I compared it to my AT&T iPhone and noticed that the display was slightly warmer and gave a much more yellow appearance to whites. I brought it to the Apple Store SoHo on Friday and they immediately replaced it, no questions asked. The genius got me a replacement and I was on my way. Stupid me forgot to actually look at the phone and lo and behold, yellow screen as well. So I go back tonight to the Apple Store and ask them to replace it, again the genius takes one look and rushes back to get me a new one. This time I make sure to take him with me to other iPhones so we can compare my new replacement phone, and what do you know, yellow screen as well. Me and the genius tested it against 5 separate AT&T iPhones, and they all had non-yellow gorgeous displays. At this point the genius was stumped, and basically said he was going to escalate the issue up to corporate, so hopefully something will become of it. Either way he put a note tied to my current iPhone's serial number, stating that they should replace it on the spot next time I come in. Hopefully, corporate will become aware of the issue, and hopefully within the next couple weeks, ill be able to get one without the yellow tint. One thing to note, my father received an iPhone 4 during the feb 3rd pre-sale as well, and his iPhone display is perfect, so maybe there are problematic batches.