NTT DoCoMo Inc. will pursue technological tieups rather than capital investments to expand its mobile phone business overseas, according to the firm's president.

"We will expand our business to overseas markets by mainly seeking technological tieups" with local entities, said Masao Nakamura, who became president of Japan's largest mobile phone carrier on Friday.

Nakamura was referring to a strategy shift by the company away from capital investments in overseas operators, with the firm having posted huge losses through investments of this kind in recent years.