Strategic Foresight Initiative: Technological Development and Dependency: Long-term Trends and Drivers and Their Implications for Emergency Management [open pdf - 48KB]
"Worldwide, mobile devices have become the preferred choice for communication and internet access. There were 4.6 billion mobile phone subscribers in 2009 up from 1.8 billion in 2004 (39% increase). If trends continue, it is predicted there will be 6.9 billion mobile phone subscribers worldwide by 2020 (67% increase). In 2009, half a billion mobile phone subscribers used their device to connect to the internet. This number is expected to double to one billion by 2015.Information searches, mapping/location, messaging, social networking, and music downloads are among the current and projected most popular mobile internet sites accessed by mobile device users. Facebook, the world's most popular social networking site, currently has 500 million users of which 200 million (40%) access the system through mobile devices. By 2020, mobile devices will be a primary connection tool to the internet for most people in the world."
United States. Federal Emergency Management Agency: http://www.fema.gov/