iPhone X smartphone runs on the iOS 12, upgradable to iOS 15.2 . It has 128GB storage and 3GB RAM.  It runs on the Apple A12 Bionic chipset.  It has a 6.1" screen-to-body ratio, Liquid Retina IPS LCD, 625 nits (HBM), 828 x 1792 pixels, 19.5:9 ratio