China smartphone shipments declined -5% YoY in Q2 2018. The decline is the combined result of lengthening replacement cycle, economic headwinds, and ongoing industry consolidation in China. The situation, however, has been improved from a quarter ago, as the vendors managed to clear inventories in Q1 and re-started pile up their new orders in Q2. Huawei, OPPO, vivo, and Xiaomi are the big four smartphone vendors, benefiting most from the on-going industry consolidation. Meanwhile, it is increasingly difficult for smaller vendors to survive in hyper competitive and increasingly concentrated Chinese market. Our extensive report contains handset and smartphone shipments and market share by multiple vendors and operating systems by quarter in China from Q1 2009 to Q2 2018. A forecast by smartphone vendor for Q3 2018 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.