Allview X4 Xtreme official Pictures. Allview X4 Xtreme is a Smartphone of allview. The Allview X4 Xtreme Android Smartphone. Announced Jun 2017. Features 6.0″ Display, MT6757T Helio P25 Chipset, Dual: 13 MP (PDAF) + 5 MP Primary Camera, 20 MP Front Camera, 4550 MAh Battery, 64 GB Storage, 4 GB RAM, Corning Gorilla Glass 3. Allview X4 Xtreme price starts.