#In November 2016, CMHK were the first operator in the world to successfully test and demonstrate ‘2.3GHz TDD Massive MIMO solution’ in live network. In February 2017, CMHK became the first mobile operator to implement cloud core network. In September 2017, CMHK led the industry by announcing the first commercial NB-IoT launch in HK. In March 2018, CMHK was the first operator to get 5G trial permit in Hong Kong. In July 2018, CMHK became the first mobile network operator in Hong Kong to successfully complete 5G network end-to-end testing.