3 points
Always online displays are more prone to this. Manufacturers mitigate this by moving numbers around, like screen saver. Simply put OLED screens emit light, instead of filtering it like LCD. Am not quite sure why they degrade over time, but they do… especially blue diodes. But how fast this forms really depends on usage patterns. Whether you like bright screen or not, whether you have AOD, whether there’s elements always visible on screen (back button, clock, etc). With my own devices at 3 years of use there wasn’t any signs but they start showing after that. My mom who uses the same device, after changing the screen, has this happen to her not even a year in.
