iphone 8 lists: 1334-by-750-pixel resolution at 326 Ppi 8+ lists: 1920-by-1080-pixel resolution at 401 ppi I'm not an expert. I kind of get that the resolution will be different because the screen is a different size. The PPI has me a little confused. If it's a retina display, why would there be a difference in screen quality? In other words, how can an image be clearer on an 8 plus as compared to an 8 and they're both the retina display, which is supposed to mean that you can't Differentiate pixels? Wouldn't they be the same quality?