Xiaomi is the 5th largest smartphine vendor in the world

"According to the latest research from our WSS (Smartphones) service, global smartphone shipments grew 27 percent annually to reach 295 million units in the second quarter of 2014. Xiaomi was the star performer, capturing a record 5 percent marketshare and becoming the world’s fifth largest smartphone vendor for the first time ever.
Global smartphone shipments grew 27 percent annually from 233.0 million units in Q2 2013 to 295.2 million in Q2 2014. Smartphone growth was mixed on a regional basis during the quarter, with healthy demand in Asia and Africa counterbalanced by sluggish volumes across North America and Europe due to changes in the operator subsidy mix."
Source:  Data from Strategy Analytics, reported in their blog, 31st July 2014
Note - lots more info in the full release