According to the Federal Communications Commission, use of landline phones declined by 20 million customers between 2001 and 2005. (February 2007 Trends in Telephone Service Survey)
As of April 2008, the percentage of American households that owns a mobile phone is 84 percent. (CTIA, The Wireless Association)
Since 2006, the total number of minutes used per month on wireless phones has exceeded the landline minutes used per month. (The Yankee Group)
Roughly half the emergency 911 calls made in the United States are initiated from a cell phone. (The National Emergency Number Association)