Do I have to go to the business hall to cancel my calling card?

You don't have to go to the business hall to cancel your calling card. The three major operators (China Mobile, China Unicom and China Telecom) all offer the option of online cancellation. China mobile users can log out by downloading and using their mobile phone business hall APP; China Telecom users can also make an appointment by downloading the telecom business hall APP; China Unicom launched the calling card cancellation function on its official app. WeChat WeChat official account can also apply for cancellation of mobile phone number. If the user's mobile phone card does not support online cancellation or needs to deal with other problems, then it is best to go to the business hall to handle it.

The three major telecom operators in China are China Mobile, China Telecom and China Unicom, which provide fixed telephone, mobile telephone and Internet access communication services respectively. After China officially entered the 3G era in 2009, these three companies formed a three-point world pattern. With the development of technology, in addition to the traditional fixed-line, mobile phone, SMS, broadband and other services, the three major operators have also begun to expand new services such as cloud services, video services and IT systems in recent years.