…in one day on a single platform, that crown has just been captured by Xiaomi. According to their Facebook page, they sold 2.11 million handsets in 24 hours on their 5th year anniversary of operation.
The Guinness website still shows Alibaba as the record holder from last year:
The most mobile phones sold on a single online platform in 24 hours is 1,894,867 phones and was achieved by Tmall (China) during their Single’s Day sales on 11 November 2014.
So congrats to them.