China smartphone shipments fell -3% YoY in Q3 2017, due to extended replacement rates, continued supply constraints on key components, and accelerated consolidation among brands. Huawei clung on to top spot, followed closely by OPPO. Vivo is slowing, while Xiaomi is surging. Our extensive report contains handset and smartphone shipments and marketshare by multiple vendors and operating systems by quarter in China from Q1 2009 to Q3 2017. A forecast by smartphone vendor for Q4 2017 is also included. The report is a valuable tool for stakeholders wishing to track the China market, the world's largest by volume and revenue.