2018 was a brutal year for North American smartphone vendors, particularly Q4 2018. Just one top 5 vendor showed positive annual growth in the final quarter of the year while three were down and one was flat. Overall the region saw a -21% decline in smartphone shipments for the final quarter of the year. This report contains quarterly smartphone shipments and marketshare for the top 20 vendors and top operating systems in the United States and Canada for Q4 2018. The report also contains historical data for North America from 2007 to the current quarter.