Global smartphone shipments grew +1% annually in 2017, but fell -9% YoY in Q4 2017. Apple regained the first position by volume in global smartphone market this quarter, and topped in North America, Western Europe, and Asia Pacific. Samsung yielded to the second place, but remained the top spot in Central Latin America, Central Eastern Europe, and Africa and Middle East. Huawei ranked No. 3 in global market, but posted mixed performance across the regions. OPPO maintained the fourth place, but its momentum has softened due to the intensified competition and the peaking position in home market. Xiaomi soared and solidified the fifth largest vendor this quarter. Our extensive report contains global smartphone shipments for the top 30+ vendors by quarter from 2007 to Q4 2017. Global smartphone shipments by vendor by operating system by region by quarter are also included, in a pivot table. The report is a valuable tool for mobile stakeholders who want to size the huge market for smartphones and operating systems by vendor.