TOKYO, July 5 (Reuters) - Shares in Japan's Rakuten Group Inc 4755.T climbed 2.4% on Tuesday, a day after the e-commerce firm said it has applied to list its online banking unit on the Tokyo Stock Exchange. Rakuten announced plans for an initial public listing last September as it grapples with the cost of building a mobile network. Its shares last month hit their lowest level in more than a decade. (Reporting by Sam Nussey; Editing by Tom Hogue) ((sam.nussey@tr.com;)) The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.