النظام العالمي للاتصالات المتنقلة
China Unicom has operated a CDMA network in Macau since October18, 2006 and internet services in North Korea since 2010. , the company had 125 million GSM subscribers and 43 million CDMA subscribers. As of November 2008 the CDMA operations have been moved to China Telecommunications Corporation (China Telecom Group). On 7 January 2009, China Unicom was awarded WCDMA license to expand its business to 3G telecommunication. UMTS (Universal Mobile Telecommunications System) was launched in major cities across China on May 17, 2009.