Redmi 10X is said to be the name of the mysterious phone that was listed on TENAA’s database with model number M2003J15SC. The last week’s listing had suggested some specifications of the phone.

source https://gadgets.ndtv.com/mobiles/news/redmi-10x-price-cny-1499-specifications-china-telecom-listing-helio-g85-soc-2216746