NTT DOCOMO, Inc. provides wireless telecommunications services, packet communications services, and satellite mobile communications services in Japan. It offers wireless voice and data communication services, such as second generation (2G) and third generation (3G) cellular services, and mobile multimedia services. The company provides mova services, on the 2G network, compatible with voice and data communication; FOMA services, on its 3G network, with voice and high-speed data communication, which are compatible with various services, such as videophone and video content downloading; and i-mode services, which are wireless Internet access services. As of March 31, 2011, it had approximately 58.01 million cellular subscribers. NTT DOCOMO also offers packet communications services, such as wireless data communications services using packet switching; satellite mobile communication services for communications in case of emergencies; and international calling and international roaming services. In addition, the company provides mopera U Internet connection services for data cards and smartphones; embedded modules for automobile fleet management, wireless credit card settlement systems, and telemetric systems for automatic inventory checks between vending machines and service centers; and MyArea services that offer high-speed packet communication services for homes. Further, it offers home shopping services through TV media, high-speed Internet connection services for hotel facilities, advertisement services, and credit services, as well as develops, sells, and maintains IT systems. The company was formerly known as NTT Mobile Communications Network, Inc. and changed its name to NTT DOCOMO, Inc. in April 2000. NTT DOCOMO was founded in 1991 and is based in Tokyo, Japan. NTT DOCOMO, Inc. is a subsidiary of Nippon Telegraph and Telephone Corporation.