Since the launch of the new iPhone 4 many owners have been reporting problems with yellow spots on the display of the device. It seems this yellowish tinting, seen in the image above, is actually residue left over from the manufacturing process and will go away within a couple of days. An AppleInsider forum member explains:
Apple is using a bonding agent called Organofunctional Silane Z-6011 to bond the layers of glass. Apparently, Apple (or more likely Foxconn) is shipping these products so quickly that the evaporation process is not complete. However, after one or two days of use, especially with the screen on, will complete the evaporation process and the yellow “blotches” will disappear. How do I know? I was involved in pitching Z-6011 to Apple.
Gizmodo reports that a Apple support technician also confirmed this theory my saying, “its just because the residue is not dry fully yet and it should clear up within a couple of days”.
However, it seems Apple Store employees that are aware of the situation are not giving the same advice and advising customers to bring the iPhone 4 back.
“Yeah, if that happens to you just bring it back in and we’ll swap it. We have tons of replacement phones in-stock.”