NTT DOCOMO, INC. | 4,069 followers on LinkedIn. Do Communications over the Mobile Network - Mobility Everywhere | NTT DOCOMO, Japan's largest telecommunications company, provides innovative, convenient and secure mobile services that enable customers to realize smarter lives. The company serves over 73 million customers in Japan via advanced wireless networks, including a nationwide LTE network and one of the world's most progressive LTE-Advanced networks. DOCOMO is a world-leading developer of 5G networks, which it plans to deploy in the 2020s by leveraging network function virtualization (NFV) and other technologies.