Additional Note: Smartphones are any voice handset with an advanced operating system (e.g., Android, BlackBerry, iOS, Windows Phone, etc.) and features/capabilities that resemble a PC. Tablets are touchscreen devices with a color display ranging 5 to 14 inches, a Wi-Fi connection or mobile data plan, and an advanced operating system such as Android, BlackBerry, iOS, or Windows. Though some have detachable keyboards, touch is the primary interface. Devices with a cellular voice connection are excluded. Examples include Amazon Kindle Fire, Apple iPad, Google Nexus 7 or 10, Microsoft Surface, and Samsung Galaxy Tab.
Methodology: Estimates are based on the analysis of survey and web traffic data from research firms and regulatory agencies, historical trends, and demographic adoption trends.