Allview V4 Viper Pro official Pictures. Allview V4 Viper Pro is a Smartphone of allview. The Allview V4 Viper Pro Android Smartphone. Announced Jan 2020. Features 6.8″ Display MT6739 Chipset 3500 MAh Battery 32 GB Storage 2 GB RAM. Allview V4 Viper Pro price starts.