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Ok, but those are used, not refurbished. If sold as refurbished, it basically is a scam.
Refurbished generally implies used. It's never specified what refurbished is supposed to mean exactly. I don’t think even Apple replaces the battery if it’s still at 99% or so. If it looks and behaves approximately like new, it can count as refurbished. Sometimes it just means adding a box and any missing accessories.

Because of the organic nature of OLED matrix. It is starting to degrade the very moment you switched it on the first time, and every subpixel is wearing out at different speeds. I accepted OLED displays as a “necessary evil”, but I’m looking forward to microLED for the future.
People are still using their iPhone X or XS without issues after 6-7 years. LED backlights also degrade with time (though a bit more slowly). LCD screens get dimmer over time, and can shift their whitepoint.

Micro-LED isn't coming anytime soon. Not this decade, pretty certainly. And it also has per-subpixel degradation, like all LEDs.
 
Refurbished generally implies used. It's never specified what refurbished is supposed to mean exactly. I don’t think even Apple replaces the battery if it’s still at 99% or so. If it looks and behaves approximately like new, it can count as refurbished. Sometimes it just means adding a box and any missing accessories.

Nope. Apple has a very precise definition of refurbished, and it includes a new battery


People are still using their iPhone X or XS without issues after 6-7 years. LED backlights also degrade with time (though a bit more slowly). LCD screens get dimmer over time, and can shift their whitepoint.

Micro-LED isn't coming anytime soon. Not this decade, pretty certainly. And it also has per-subpixel degradation, like all LEDs.
People are using devices and they are accustomed over the time to the degradation, so they didn’t notice.
LED dimming over the time is different from organic degradation of OLED panels.
 
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