A phone called the Vivo V1938T has gained 3C certification in China. Given that it has dual-band 5G, this device is most likely the X30 or its Pro variant. This series is also now rumored to have quad cameras with a 60MP sensor, a 4500mAh battery and at least 8GB of RAM.
https://www.notebookcheck.net/A-Vivo-5G-phone-passes-3C-certification-which-reveals-33W-charging.444015.0.html