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What are the stems of China Mobile Unicom's telecom fraud?

The classic advertising words of the three major operators in China:

China Mobile said, "Beware of telecom fraud."

China Telecom said, "Beware of mobile payment traps."

China Unicom said: "Pay attention to telecom fraud in mobile payment."

Operators refer to the providers who provide network services. The manufacturers of communication equipment such as Huawei, ZTE, Nokia and Ericsson are called manufacturers, while China Mobile, China Unicom, China Telecom and China Radio and Television are called operators. Because the country is very strict in telecommunications management, only companies with operating licenses issued by the Ministry of Industry and Information Technology can set up networks.

From the perspective of communication industry, equipment manufacturers and operators are interdependent, but operators generally have more advantages, just as China Mobile stipulated that some mobile phones produced by Nokia and other mobile phone manufacturers should be branded with the GSM brand.

Three major operators

China Mobile mainly operates GSM, TD-SCDMA, TD-LTE networks and fixed networks.

China Unicom mainly operates GSM, WCDMA, FDD-LTE and fixed network.

China Telecom mainly operates CDMA, CDMA2, FDD-LTE, TD-LTE networks and fixed networks.