The document provides statistics on smartphone ownership and usage in the United States. Some key facts include:
- 76.8 million Americans owned smartphones in mid-2011, an 11% increase from the previous period.
- Wealthy individuals under 50 and those with a college degree have higher rates of smartphone adoption.
- Mobile data usage grew 77% in the first half of 2011, with video streaming and file sharing accounting for most data consumption.
- Mobile advertising spending is expected to top $1 billion in 2011 and grow substantially in subsequent years as smartphones continue to rise in popularity.