No they don’t. They haven’t even been out long enough for an OLED screen to burn in even if it was on 24/7 at full brightness. It’s a bug and it’s fixed in the latest OS update.
I'm guessing the joke here is that due to iPhones having text and icons in the same places on many screens this leads to more cases of Screen Burn-in. The image shows an iPhone displaying a white image that then highlights this fault with the phone and the title makes a joke comparing these always visible marks on the screen to the 'always-on' feature where the screen displays information even when the screen is 'off'.
Oh dear! Do they really get any burn-in? Is there a reason why Apple phones specifically would be susceptible to this? I've never heard of the issue on any phones, though.
As a sidenote: I do notice that the position of my Android AOD design shifts slightly every time, probably to prevent any burn-in.
Burn in is 100% a problem but apparently it was a bug causing the issue in the picture. An update was recently released and users with the problem are reporting that it’s completely gone.
afaik all OLED displays get this: the pixels degrade slightly over time… any always on display in a phone currently will be an OLED display, so the movement will certainly be to at least smooth out the pixel degradation