China Telecom started the latest among the three major operators, and its strength is relatively weak. There is a famous saying on the Internet: once you enter the telecom, it is difficult to buy a mobile phone, which shows the embarrassing position of the telecom. Although there are many absolute users, the support of the mobile phone communication baseband for telecom has never been satisfactory. In terms of network, China Telecom's 2G network uses CDMA1X network, while its 3G network uses CDMA2. The 4G network is the same as Unicom, and both are TD-LTE and FDD-LTE hybrid networking schemes.