http://wccftech.com/iphone-x-no-oled-burn-in-ios-11/ >The iPhone X will be the first phone to get an OLED screen, resulting in several benefits ranging from richer colors to higher brightness to better battery life. However, screen burn-in issues have also been reported in the past on devices that use this particular display technology. To mitigate this little obstacle that could otherwise make you livid after spending a small fortune on the iPhone X, Apple’s upcoming software update, iOS 11 will have safety measures that will prevent such an event from taking place. >LCD screens can suffer from this problem too but OLED panels currently incorporated in mobile phones are prone to experiencing this. What exactly is a burn-in on a smartphone display? It is when a faint white image sticks around for a long time. JerryRigEverything has demonstrated this by applying heat to a smartphone that features OLED display technology and unfortunately, the burned pixels do not recover, leaving a permanent ghosted mark.