Metro PCS is the fifth largest facilities-based wireless telecommunications provider in the U.S. measured by the number of subscribers served. MetroPCS offers wireless broadband services to selected major metropolitan areas in the U.S. and provides a variety of wireless communications services to subscribers on a no long-term contract, paid-in-advance basis. As of December 31, 2010, it had over 8.1 million subscribers. In April 2007, MetroPCS Communications consummated an initial public offering of its common stock and became listed for trading on The New York Stock Exchange under the symbol "PCS." As of December 31, 2010, it held licenses for wireless spectrum covering a total population of approximately 142 million people in and around many of the largest metropolitan areas in the U.S. In addition, MetroPCS has roaming agreements with other wireless carriers that allows it to offer customers service in many areas when they are outside our service area. These roaming agreements, together with the area it serves with its own networks, allows its customers to receive service in an area covering over 280 million in total population under the Metro USA brand. Metro PCS provides its services using code division multiple access, or CDMA, networks using 1xRTT technology and, in all but one major metropolitan area, long term evolution, or 4G LTE, technology. It introduced the first commercial 4G LTE service in the United States in its Las Vegas and Dallas/Fort Worth metropolitan areas in September 2010 and launched the world's first dual mode 4G LTE/CDMA handset. Source: SEC Filings