According to last year's IDC research the Chinese electronics company is the world's third largest smartphone manufacturer in terms of the number of units shipped. In the third quarter 2014, Xiaomi shipped more units than Lenovo and LG. The first and second spots are occupied by Samsung and Apple respectively.
If you've never heard of Xiaomi or seen a Xiaomi handset before, you may be wondering where all these Xiaomi users are. Xiaomi's biggest market is China, unsurprisingly. They also have a large following in other Asian countries such as India and Indonesia.
A big reason for Xiaomi's success is their Android-based operating system called MIUI. Obviously price is a huge factor too. Xiaomi's flagship Mi4 is about $150 cheaper than other brands' counterpart such as HTC One M8.