iPhone 11 Pro Max smartphone runs on the iOS 13, upgradable to iOS 15.1. It has 64GB storage and 4GB RAM.  It runs on the Apple Apple A13 Bionic chipset.  It has a 6.5" screen-to-body ratio, Super Retina XDR OLED, HDR10, Dolby Vision screen with 1242 x 2688 pixels pixels, 19.5:9 ratio.