Asus Zenfone 3 ZE520KL official Pictures. Asus Zenfone 3 ZE520KL is a Smartphone of asus. The Asus Zenfone 3 ZE520KL Android Smartphone. Announced Jul 2016. Features 5.2″ Display, Snapdragon 625 Chipset, 16 MP Primary Camera, 8 MP Front Camera, 2600 MAh Battery, 64 GB Storage, 4 GB RAM, Corning Gorilla Glass 3. Asus Zenfone 3 ZE520KL price starts.