Asus Zenfone 3 Ultra ZU680KL official Pictures. Asus Zenfone 3 Ultra ZU680KL is a Smartphone of asus. The Asus Zenfone 3 Ultra ZU680KL Android Smartphone. Announced May 2016. Features 6.8″ Display, Snapdragon 652 Chipset, 23 MP Primary Camera, 8 MP Front Camera, 4600 MAh Battery, 128 GB Storage, 4 GB RAM, Corning Gorilla Glass 4. Asus Zenfone 3 Ultra ZU680KL price starts.