When the first the iPhone came out, it didn't take long for people to realize that serial numbers starting with 5s and 7s had different LCD panels. This time, they're all 8s. I'm pretty sure that the second number in the serial number means different panels. My first iPhone 3G was an 86 and it had a horrible screen compared to the rest. It was just more yellow a lot less vivid and less crisp than the two 87 demos I compared it to. I exchanged that and my 88 seems to be the best out of those three, but I didn't really get too much of a side-by-side comparison. Anyone know any sites that compared the different LCD panels Apple used yet? If I exchange mine because of shoddy build quality, I don't want to get a worse screen, I'd really like to know which one's the best and how to tell.