The Asus Zenfone ARZS571KL was announced in 2017, January With 5.7 inches, 89.6 cm2 (~72.6% screen-to-body ratio) Super AMOLED, Powered by Qualcomm MSM8996 Snapdragon 821 (14 nm) and running Android 7 (Nougat), ZenUI 3, the device delivered smooth performance and multitasking capabilities. Its 23 MP, f/2.0, 1/2.6", 1.0µm, PDAF, 4-axis OIS, depth & motion tracking sensors rear camera captured crisp photos and 4K@24fps, 1080p@30fps video, while the Li-Ion 3300 mAh, non-removable ensured long-lasting usage.