KDDI Corp, Japan’s No. 2 wireless operator, could invest more in a new WiMax venture in its hunt for new revenues as growth in its voice services slows and it waits to launch LTE technology, its president said.

The company, which competes with sector leader NTT DoCoMo Inc and No. 3 Softbank Corp in a saturated market, hopes demand for high-speed Internet downloads and uploads will help expand its user base.

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