The Asus Zenfone Max (M2) ZB633KL was announced in 2018, December With 6.26 inches, 97.8 cm2 (~80.9% screen-to-body ratio) IPS LCD, Powered by Qualcomm SDM632 Snapdragon 632 (14 nm) and running Android 8.1 (Oreo), upgradable to Android 9.0 (Pie), the device delivered smooth performance and multitasking capabilities. while the Li-Ion 4000 mAh, non-removable ensured long-lasting usage.