the iPhone XS Max and iPhone XS have feature parity, including screen quality. There is no obvious feature you get by going with the 6.5-inch model over the 5.8-inch iPhone XS other than screen area.
The iPhone XS is Apple's now-retired 2018 flagship ... The phone has a 5.8-inch edge-to-edge display, the same as 2017's iPhone X. Due to the lack of a home button, it required first-time users ...