There is a problem that always accompanies Apple in the launches of iGadgets (1, 2, 3, 4, 5, 6, 7): yellowish canvas. O device the iPhone 4S. A topic in the Apple Support Communities has already been opened in which users complain that the screen on the new Apple smartphone has a yellowish tinge, different, for example, from the iPhone 4, some others complain that the colors are not vibrant and that the contrast would not be appropriate.
Once again, the problem may be related to the production of the iPhone: the yellowish color would come from the adhesive used to glue the screen in the manufacture of the device. Eventually the yellow color will disappear and the display will show a more natural tone, because the adhesive will dry out after a few days.
The "problem" seems to be random, which may reinforce the theory above those that do not have the warmest coloring may have been manufactured earlier than those that do. The suggestion wait a while (a few weeks), to see if the adhesive dries and the yellowish tone disappears. In any case, if the customer insists, Apple is reportedly switching devices.
I don't think this is a big problem, I just noticed, right here, that the screen of my iPad 2 ?colder? (bluish) than that of my iPhone 4, see:
This is probably due to the display used, which may change from supplier to supplier, quantity of adhesive used in manufacturing, etc. As long as it doesn't get in the way, I find these differences normal. No production can guarantee 100% identical parts, there is no way.
(via Cult of Mac)