T-Mobile US, Inc. provides mobile communications services under the T-Mobile, MetroPCS, and GoSmart brands in the U.S., Puerto Rico, and the U.S. Virgin Islands. It offers postpaid and prepaid wireless voice, messaging and data services, and wholesale wireless services. The company also provides wireless handsets and accessories, including smartphones; wireless-enabled computers, such as notebooks and tablets; and data cards manufactured by various suppliers. It sells services, handsets, tablets, and accessories to consumers through the company's owned and operated retail stores, as well as through Websites; and to dealers and other third party distributors for resale through independent third-party retail outlets and a various third-party Websites. T-Mobile US, Inc. was formed through the business combination between T-Mobile USA, Inc. and MetroPCS Communications, Inc. on April 30, 2013 and is headquartered in Bellevue, WA.