T-Mobile US, Inc. (T-Mobile) is a provider of mobile communications services. The Company provides wireless communications services, including voice, messaging and data under its brands. It provides wireless communications services to approximately 60 million customers in the postpaid, prepaid and wholesale markets. It provides service, devices and accessories across its brands, T-Mobile and MetroPCS, in the United States, Puerto Rico and the United States Virgin Islands. It provides mobile communications services using fourth-generation long-term evolution. T-Mobile also offers a selection of wireless devices, including handsets, tablets and other mobile communication devices, and accessories. In addition, T-Mobile provides reinsurance for handset insurance policies and extended warranty contracts offered to T-Mobile's mobile communications customers. It provides wireless communication services to over three categories of customers: branded postpaid, branded prepaid and wholesale.