Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3) The iPhone 4S, compared with iPad & iPod touch, has a yellow tint. A yellow tint. What kind of defect is this? Why is my screen yellow? And how do you fix it?