Total mobile subscribers and subscriptions including prepaid subscriptions. Installed base and sales of mobile handsets segmented by speed (2.5G, 3G, and 4G/LTE) and feature set (basic devices, messaging devices, smartphones, and dual mode handsets). Includes only current market share of operating system for smartphones (Apple/iOS, Android, RIM, Windows). Also includes smartphone and mobile Internet users. Includes historical data going back to 1997 plus a five-year forecast.