North America smartphone shipments dipped -9% annually in Q4 2017. Apple held top spot, but its volumes softened due to increased competition. Meanwhile, Motorola performed well in the quarter as it expanded distribution channels. This report contains quarterly smartphone shipments and marketshare for the top 20 vendors and top 5 operating systems in the United States and Canada for Q4 2017. The report also contains historical data for North America from 2007 to Q3 2017.