Probably it was due to their marketing strategy which has been given the name of “hunger marketing”. Small number of sets was offered for sale and continuing it continuously thus created this wonderful sale.
There are two models of Redmi Note by way of prices and specifications. 999 Yuan/ 161 USD have features an Octa-core 1.7GHz MT6592 CPU under the hood, with 2GB of RAM and 16GB of native storage. The other is 799 Yuan/ 130 USD version having Octa-core 1.4 GHz MT6592 CPU under the hood, with 1GB of RAM and 8GB of native storage.
999 Yuan version immediately sold 1 lack units and 799 versions captured the market by getting 1.15 millions in pre-orders where as Apple iPhone 5S and Apple iPhone 5C both combined got 9 million units sale.
15 million pre-order sales accedes even the Samsung Galaxy S5 therefore the product has topped the market in its sales with these figures Xiaomi Redmi Note has become the most popular phablets in the world. Xiaomi might not be revealing the actual figures of their business but practically in seems much lower than that.