TOKYO -- SoftBank Corp. has committed significantly less capital to roll out its superfast fifth-generation network than its peers NTT Docomo and KDDI, in a sign of caution over the nascent technology.
The investment figures were revealed in applications by the three carriers and Rakuten, a newcomer that plans to launch 4G services in October. The applications were approved by the Ministry of Internal Affairs and Communications and made public on Wednesday.
