Few iPhone 4 users reported that they are facing some serious problems with their iPhone 4; One such problem was yellow pigmentation being seen on the retina display of iPhone. Well I was going through forum threads and  I found a legit explanation that why few iPhone 4 users are seeing yellow spot on Appleinsider forums:“Apple is using a bonding agent called Organofunctional Silane Z-6011 to bond the layers of glass. Apparently, Apple (or (more…)