Ah yes, the yellow screen thing. You may have a problem, Rocko -- I'd have to see it. However, depending on the kind of background lighting, a perfectly good iPhone sometimes DOES show a yellowish screen. The nature of overhead lights is relevant. Mine is great (and white) in most situations, but turns yellowish under some fluorescent or CFL-type lights. If yours is perfectly fine in the outdoors and under incandescent lights, then the device is probably just fine. My 2 cents.