Telephone and Data Systems, Inc., a telecommunications company, provides wireless, wireline, cable, and hosted and managed services in the United States. The company offers cellular services, such as postpaid national plans and prepaid service plans with voice, messaging, and data usage options; and shared data plans that include unlimited voice minutes and text messaging; business rate plans. It also offers wireless devices comprising handsets, modems, mobile hotspots, home phone, and tablets; and accessories, such as carrying cases, hands-free devices, batteries, battery chargers, memory cards, and other products. In addition, the company provides wireline and cable broadband services, such as fiber-based and digital, and other data services; Internet protocol television and satellite video services; voice services comprising local and long-distance telephone service, voice over Internet protocol, voice mail, caller ID, and call forwarding services; and network access services. Further, it offers cloud computing, colocation, hosted application management, and hosted and managed services; and planning, engineering, procurement, sales, installation, and management of information technology infrastructure hardware solutions, as well as printing and distribution services. As of December 31, 2014, the company served approximately 4.8 million wireless customers and 1.2 million wireline connections. Telephone and Data Systems, Inc. sells its products through retail sales direct sales, third-party retailers, and independent agents, as well as through Website and telesales. The company was founded in 1968 and is headquartered in Chicago, Illinois.