The Redmi Note 7 series refer to a series of smartphones released by Redmi, a sub-brand of Xiaomi. All (except the Redmi Note 7 variant in India) have 48 MP + 5 MP camera sensors. Most have a Qualcomm Snapdragon 660 SoC, except the Redmi Note 7 Pro, which has a better Qualcomm Snapdragon 675 SoC. The phones support mobile network frequencies in different regions. The Note 7 is available in many local versions and a global version, compatible with mobile phone providers in most places; the Pro model is supplied in slightly different Chinese and Indian versions. The Redmi Note 7S doesn't have much difference when compared to Redmi Note 7 except in case of the rear camera, hence the production of the Redmi Note 7S was discontinued and came under the Redmi Note 7 in India but it's still available separately in China and other countries.
In August 2019 Xiaomi announced that the Redmi Note 7 series had sold more than 20 million units worldwide.