What is the development course of China Mobile, Telecom and China Unicom?

China Mobile: China Mobile is the largest mobile operator in China, established in 1997. Its development history can be divided into the following stages: 1. 1997-200 1 year: in its early days, it mainly provided basic mobile communication services, such as voice communication and short messages. 2.2002-2007: Further develop 3G networks and value-added services, and launch multimedia short messages and color ring tones. 3.20/200813: Start to promote 4G network and mobile broadband services, strengthen cooperation with other industries, and launch terminals. 4.20 14- Up to now: Continue to deepen 4G services, transform to 5G networks and the Internet, and develop emerging services such as the Internet of Things and cloud computing. China Telecom: China Telecom is one of the three major telecom operators in China, which was established in 2002. Its development history can be divided into the following stages: 1. 2002-2005: In its early days, it mainly provided fixed telephone and broadband services. 2.20/200610: 3G network was laid out, and a number of value-added services such as mobile phone payment and mobile phone watching TV were launched. 3.2011-2015: further develop 4G technology and fixed-line services, strengthen cooperation with other industries, and carry out a number of internet video, cloud computing, big data and other services. 4.20 16- Up to now: Continue to further promote 4G technology and fixed-line services, actively promote the layout of 5G networks, and strengthen the application of new technologies such as Internet of Things, cloud computing and big data. China Unicom: China Unicom is another major telecom operator in China, which was established in 2002. Its development history can be divided into the following stages: 1. 2002-2006: In its early days, it mainly provided fixed telephone and broadband services. 2.20/200711year: 3G network was laid out, and a number of value-added services such as mobile phone payment and mobile phone watching TV were launched. 3.20 12-20 15: deepen the development of 3G and 4G technologies and fixed-line services, strengthen cooperation with other industries, and develop a number of services such as internet video, cloud computing and big data. 4.20 16- Up to now: Continue to further promote 4G technology and fixed-line services, actively promote the layout of 5G networks, and strengthen the application of new technologies such as Internet of Things, cloud computing and big data.