The Apple iPhone 11 Pro Max was announced in 2019, September 10 With 6.5 inches, 102.9 cm2 (~83.7% screen-to-body ratio) Super Retina XDR OLED, HDR10, Dolby Vision, 800 nits (HBM), 1200 nits (peak), Powered by Apple A13 Bionic (7 nm+) and running iOS 13, up to iOS 15.6, planned upgrade to iOS 16, the device delivered smooth performance and multitasking capabilities. while the Li-Ion 3969 mAh, non-removable (15.04 Wh) ensured long-lasting usage.