What is the relationship between China Unicom, China Mobile and China Telecom?

Mobile communication service was originally a service of China Telecom. It can be said that before the establishment of China Unicom, China Telecom monopolized the mobile communication market in Chinese mainland, because "there is only one company, and there is no semicolon". China United Communications Co., Ltd. was established in July 1994. The establishment of China Unicom has introduced competition in the field of basic telecommunications services in China, which has played a positive role in promoting the reform and development of China's telecommunications industry. China Mobile Communications Group Corporation (hereinafter referred to as "China Mobile Communications") is an important state-owned backbone enterprise established on April 20, 2000 on the basis of the overall divestiture of the original mobile communications assets of China Telecom in accordance with the deployment and requirements of the state on the reform of the telecommunications system, and is directly managed by the central government.