NTT Docomo Inc. is the predominant mobile phone operator in Japan. The name is officially an abbreviation of the phrase, "do communications over the mobile network", and is also from a compound word dokomo, meaning "everywhere" in Japanese. Docomo provides phone, video phone, i-mode, and mail services.

The scope of DOCOMO's extensive research and development program is unprecedented among mobile operators. The company operates a major R&D center in Japan and advanced facilities in China, Germany and the USA, as well as collaborates with a wide range of leading-edge technology innovators. As a provider of integrated services centered on mobility, DOCOMO is actively engaged in the development of technologies for next-generation devices, services and networks, as well as revolutionary concepts for all-new convenience, efficiency and creativity in business and daily life.