The Asus ROG Phone ZS600KL was announced in 2018, June With 6.0 inches, 92.9 cm2 (~76.8% screen-to-body ratio) AMOLED, 90Hz, HDR, Powered by Qualcomm SDM845 Snapdragon 845 (10 nm) and running Android 8.1 (Oreo), upgradable to Android 9.0 (Pie), ROG Gaming X UI, the device delivered smooth performance and multitasking capabilities. while the Li-Ion 4000 mAh, non-removable ensured long-lasting usage.