The X300 series consists of the X300 and the X300 Pro. Both smartphones will be powered by MediaTek's freshly announced Dimensity 9500 SoC and run Android 16-based OriginOS 6 out of the box. It will be introduced by vivo on October 10. OriginOS 6 will be introduced on October 10 The vivo X300 will be 7.95mm thick, pack a 6.31" display, and come in four colors.