Vivo NEX 3S 5G official Pictures. Vivo NEX 3S 5G is a Smartphone of vivo. The Vivo NEX 3S 5G Android Smartphone. Announced Mar 2020. Features 6.89″ Display Snapdragon 865 5G Chipset 4500 MAh Battery 256 GB Storage 12 GB RAM. Vivo NEX 3S 5G price starts.