The Redmi Note 7 was released for sale today (January 15, 2019) in its home country, China. The Snapdragon 660 phone with the 48MP camera sensor reportedly took only 9 minutes to sell out completely. Redmi sources are quoted as claiming that "hundreds of thousands" of units were sold in this time.
https://www.notebookcheck.net/The-Redmi-Note-7-reportedly-sold-out-9-minutes-into-its-first-day-on-sale.394706.0.html