Telephone and Data Systems Inc, based in Chicago, Illinois since 1968, is a key player in the telecommunications sector in the United States. The company operates mainly through UScellular and TDS Telecom, offering a wide range of services including wireless and internet solutions, IoT applications, and cloud-based TV platforms. It caters to both individual consumers and various business and government entities, providing everything from smartphones and tablets to broadband and voice services. Products are available through a mix of retail, online, and direct sales channels.