Vivo has launched a phone called the S1 for the Indian market. Unlike the existing device of the same name for the Chinese region, it is a new product powered by the MediaTek Helio P65 SoC, runs Android 9.0 and has triple rear cameras.
https://www.notebookcheck.net/Vivo-debuts-S-series-of-phones-in-India.427344.0.html