
For the fourth quarter of 2012, IDC forecast smartphone shipments of 224.5 million, up 39.5 percent year-over-year. Over the full year 2012, smartphone shipments are forecast to grow 45.1 percent to 717.5 million units. Smartphone growth is driven by new flagship devices, such as Apple's iPhone 5 and Samsung’s Galaxy S3, as well as lower-cost Android phones shipped to China and other emerging markets.
IDC expects Android will maintain its lead among smartphone OS, with a share of 63.8 percent in 2016. Windows Phone will show the fastest growth over the period, at a CAGR of 71.3 percent, to reach an estimated market share of 11.4 percent in 2016.