T-Mobile US, Inc. (T-Mobile) is a national provider of mobile communications services with a network covering more than 280 million people throughout the United States. It generates revenue by offering postpaid and prepaid wireless voice, messaging and data services, and wholesale wireless services. As of December 31, 2013, the Company provided service to approximately 47 million customers through its nationwide network. It also generates revenues by offering a wide selection of wireless handsets and accessories, including smartphones, wireless-enabled computers such as notebooks and tablets, and data cards, which are manufactured by various suppliers. T-Mobile provides wireless communication services nationwide through a variety of service plan options. These include its Value and Simple Choice plans, which allow customers to subscribe for wireless services separately from, or without purchase of or upfront payment for, a handset.