NTT DOCOMO, INC., a telecommunications company, provides various mobile services in Japan and internationally. It operates through three segments: Telecommunications Business, Smart Life Business, and Other Businesses. The company offers iPhone, iPad, smartphone, tablet, and feature phone products and services under the docomo name, as well as d POINT CLUB, a point program. It also provides technical and operational services to mobile operators and other companies. In addition, the company offers LTE, FOMA, and FOMA high-speed services; docomo Wi-Fi services; VoLTE voice call services; docomo Hikari, an optical Internet service; and docomo Shop services. Further, it provides optical-fiber broadband, satellite mobile communications, and international services; distributes video, music, and electronic books, etc.; and offers finance/payment services, online shopping service, other life-related services, etc. Additionally, the company engages in the mobile device protection service, commissioned development/sale, system maintenance businesses, etc. As of March 31, 2019, it had 78.45 million cellular subscriptions; and 70.15 million d POINT CLUB memberships. NTT DOCOMO, INC. has collaboration with Tohoku University to research on an artificial-intelligence technology to detect periodontal disease by photographing a person's gums with a smartphone. It also has a mobile payment alliance agreement with Merpay, Inc., LINE Pay Corporation, and KDDI Corporation for merchant stores. The company was founded in 1991 and is headquartered in Tokyo, Japan. NTT DOCOMO, INC. is a subsidiary of Nippon Telegraph and Telephone Corporation.