These factors can include uneven pixel degradation, burn-in, or malfunctioning display components, resulting in persistent and irreversible discoloration on the screen.

Apple is rolling out iOS 17.1 RC which fixes the "screen burn-in" issues faced by iPhone 15 Pro users, as it was an image retention bug.

Maintaining your OLED panel and making sure it lasts as long as possible involves things like learning how to fix OLED screen burn-in and how to clean it.