Rakuten Inc.'s mobile phone unit on Wednesday launched a full-scale mobile phone service in Japan, with its drastically lower fees fueling speculation that the new operator will intensify the price battle among its bigger rivals.Rakuten Mobile Inc. introduced the single fee plan that charges 2,980 yen ($27) per month for unlimited calls and data services in some urban areas including Tokyo, Nagoya and Osaka where it has established its own networks.In a bid to steal customers from larger rivals, the company's mobile fees have been reduced to less than half the approximately 7,000 yen per mo…READ FULL ARTICLE
