TOKYO, Mar 18, 2020 - (JCN Newswire) - NTT DOCOMO, INC. announced today that it will launch its much anticipated fifth-generation mobile communications service (5G) on a commercial basis in Japan on March 25. At the time of launch, the service will achieve a maximum data rate of 3.4 Gbps and in June the downlink will increase to a maximum 4.1...