Is there any connection between the main card and the auxiliary card?

Contact information: The main card and the secondary card share the same account number, but the two numbers are different, so they can make phone calls and send text messages independently and use traffic to surf the Internet, but the charge and traffic of the secondary card are mainly used by the main card.

1. What's the difference between a secondary card and a primary card?

1, there is a difference in payment.

Since the mobile phone card is divided into the main card and the auxiliary card, it must be divided into the main card and the auxiliary card. Actually, these two cards are for a set meal. Except for the extra charge, all packages of the secondary card are included in the package of the main card, which means that the secondary card enjoys the package business of the main card. In the process of using the secondary card, there is no need to pay again if there are no additional fees, such as telephone charges, traffic charges, SMS charges, etc. If these "free services" are included in the main card package, the secondary card can always enjoy such services.

2. There are differences in numbers.

The relationship between the primary card and the secondary card of a mobile phone is somewhat similar to the mother-child relationship. When the service of the primary card stops, the secondary card cannot use this service. If the secondary card needs to be used independently, it must be re-applied at the service point of the network operator. In other words, the primary card bears the cost of the secondary card. Although they belong to the same package, the number of the secondary card is independent and different from that of the main card.

3. There are functional differences.

After two cards are bound to the same package, there will inevitably be a master card and a slave card. Under normal circumstances, the slave card * * * enjoys most of the packages of the master card, but some packages will provide additional functions for the master card, such as MMS, CRBT, etc.

Although there are fewer people using MMS and CRBT now, some operators will provide these services for free. Generally, this service involves the main card and the auxiliary card, and will only be provided to the main card, not to the auxiliary card. In other words, in the function of the mobile phone card, the main card will be more than the auxiliary card.

To sum up, I believe you have a certain understanding of the difference between the main card and the auxiliary card. In fact, these differences are of little use. What is really useful is two points: * * Enjoy the package, and the supplementary card is free of monthly rent.

Second, the benefits of the secondary card

The advantage of the secondary card is that you can enjoy traffic and talk time, and you don't charge monthly fees such as the main and auxiliary cartoons, and you don't limit the talk time. The main number is used for work and life, and the auxiliary number is used for other reserved mobile phone numbers such as express delivery to avoid some telephone harassment and information leakage;

However, its disadvantage is that the signal may get worse. When the main card stops, the auxiliary card is not used, so the main card needs to be paid as soon as possible, and the main card can query the call records of the auxiliary card.