How does the telecom master card control the flow of the secondary card? Just don't let the secondary card surf the internet.

The main telecom card cannot directly limit the Internet traffic of the secondary card, and the mode of not allowing the secondary card to access the Internet can be operated in the following ways.

Turn off the mobile data network in the mobile phone, or use the 2G network to reduce the network speed and control the traffic usage.

Call the manual station with the number of the secondary card to apply for turning off the Internet access function of the mobile phone. After the phone is turned off, the phone will not be able to access the Internet. If you need to surf the Internet, you can call the manual station again for free.

The main card dials the manual station, provides the mobile phone number of the auxiliary card+the service password, and performs the function of closing the Internet to handle the business of different machines.