I didn't want to start an all new thread, but it seems every other thread is either a year old about the iPhone 4 having the yellow tint issue, or iPhone 4Ss having the issue now...
But I actually have an iPhone 4 since about a year, and never had an issue with the screen. However after upgrading to iOS 5 I have a yellow tint on the right hand side, upper half of the screen. Seems to be more apparent if the phone is warm due to usage.
Is that just a hardware failure I should check with Apple or a software issue that might be fixed, i.e. the phone running too hot?