T-Mobile US provides mobile communications services, including voice, messaging and data, under its brands, T-Mobile and Metro by T-Mobile, in the United States, Puerto Rico and the United States Virgin Islands. Co. provides mobile communications services using its 4G Long-Term Evolution network and its 5G technology network. Co. also provides various wireless devices, including handsets, tablets and other mobile communication devices, and accessories for sale, as well as financing through Equipment Installment Plans and leasing through JUMP! On Demand. Co. provides reinsurance for handset insurance policies and extended warranty contracts offered to its mobile communications customers.