MEMORY Card slot No Internal 64GB 3GB RAM, 256GB 3GB RAM MAIN CAMERA Dual 12 MP, f/1.8, 28mm (wide), 1/3", 1.22µm, dual pixel PDAF, OIS 12 MP, f/2.4, 52mm (telephoto), 1/3.4", 1.0µm, PDAF, OIS, 2x optical zoom PLATFORM OS iOS 11.1.1, upgradable to iOS 15.3 Chipset Apple A11 Bionic (10 nm) CPU Hexa-core 2.39 GHz (2x Monsoon + 4x Mistral) GPU Apple GPU (three-core graphics) SELFIE CAMERA Dual 7 MP, f/2.2, 32mm (standard) SL 3D, (depth/biometrics sensor) BATTERY Type Li-Ion 2716 mAh, non-removable (10.35 Wh) Charging Fast charging 15W, 50% in 30 min (advertised).syi