China Unicom Corporation, the country’s second largest mobile operator, is reportedly planning to invest 40 billion yuan to expand its CDMA and GSM networks.

China Unicom Corporation, the country’s second largest mobile operator, is reportedly planning to invest 40 billion yuan to expand its CDMA and GSM networks. China Unicom, the only operator offering both CDMA and GSM services, had signed up 27.81 million CDMA users and 84.27 million GSM users by the end of last year.