games

Yellowing and burn-in. Not temporary image retention, but actual real genuine burn-in (well, burn-out, but it amounts to the same thing - just unusable black pixels instead of unusable white ones). The technology is fundamentally flawed. Don't trust the tech reviewers who claim it's a solved problem, because it's not, and will never be. All the display manufacturers can do is hacky workarounds to slightly delay the inevitable. IPS displays like on the lowest-end Steam Deck and the original Switch and Switch Lite may not have the deep black levels of OLED, but the technology is immune to OLED-style burn-in and yellowing. Of course from the phone manufacturers' perspective this means OLED is better than IPS because it's one more reason to encourage people to buy new phones more frequently.

Anecdotally, OLED also gives maybe 5-10% of the population headaches to varying degrees due to the use of something called "pulse width modulation" (or PWM) to control the pixels. I'm not one of them fortunately but I do have several relatives and friends who straight-up cannot use OLED Apple or Samsung or Google phones (which is almost all the phones they make) because they get headaches within minutes of using those screens. Those three manufacturers also supply most of the phones available on contract from Canadian mobile carriers. Many times I've had someone I know call me while almost in tears about how their expensive new phone gives them a headache and they can't return it because it's leased through a carrier, they're locked into a contract, and the carrier refuses to make a swap.