Vivo IQOO U3x Standard official Pictures. Vivo IQOO U3x Standard is a Smartphone of vivo. The Vivo IQOO U3x Standard Android Smartphone. Announced Jun 2021. Features 6.51″ Display, Helio G80 Chipset, 5000 MAh Battery, 128 GB Storage, 6 GB RAM. Vivo IQOO U3x Standard price starts.