With the increased use of OLED screens, the old issue of burn-in is back — but Apple has a plan for compensating for that damage to iPhone and Apple Watch displays.Screen savers only exist because they used to have to save your screen. Right from the earliest days of computing, burn-in happened if a monitor was left on showing the same thing, or very often returned to that same thing.It meant there would always be a kind of ghostly image visible on the display, regardless of whether the screen was now showing something else. It was generally permanent, which meant monitors ultimately being scrapped. Read more
