I don't have good eyesight (far and shortsighted), so reading can be sometimes difficult for me. I was surprised how much easier the iPhone OLED screen (458dpi) is for reading than the 326 dpi LCD. The screen resulution difference made the iPhone XS worth it for me alone. Also, while I cannot "see" pixels on a 1x screen, a retina screen (e.g. iMac 5k) is much easier for reading too.