Asus Zenfone Go ZB551KL official Pictures. Asus Zenfone Go ZB551KL is a Smartphone of asus. The Asus Zenfone Go ZB551KL Android Smartphone. Announced Apr 2016. Features 5.5″ Display, Snapdragon 400 Chipset, 8 MP Or 13 MP Primary Camera, 5 MP Front Camera, 3010 MAh Battery, 32 GB Storage, 2 GB RAM, Corning Gorilla Glass 3. Asus Zenfone Go ZB551KL price starts.