I had my 4s replaced 2 days ago and I suspect my new replacement's screen is on the yellowish side. My older 4s which was replaced for battery problems (now we know it's iOS5 issue) had a better blueish screen and a firmer home button. This one feels yellow and cheap. I'd like to verify for sure that my screen is not what it should be like, and the geniuses will tell me it's normal unless I bring unchallengable proof. I don't think screenshots are a good measure, or are they? How do I go about checking if my screen is normal.