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 company's headquarters are in the Sanno Park Tower, Nagatachō, Chiyoda, Tokyo.Docomo was spun off from Nippon Telegraph and Telephone in August 1991 to take over the mobile cellular operations. It provides 2G PDC cellular services, 3G W-CDMA, 4G LTE and 5G NR services. Its businesses also included PHS, paging, and satellite. Docomo ceased offering a PHS service on January 7, 2008.
As of 2020, the company is under privatization by its owner.