What is the primary and secondary mobile phone cards?

Mobile phone secondary cards, also called daughter cards, are mainly used to enjoy a multi-number charging package.

The secondary card has two meanings:

1, one is that a number is divided into two cards, but the secondary card can only be used for data services such as internet access, and SMS and telephone are not available.

2, one is a package, there are two different numbers, and two numbers * * * enjoy this package.

Many family members have multiple mobile phone numbers, and they use a charging plan. Most of these packages also include free broadband charges.

The business of data secondary card is to handle a secondary card for your main card, which can be put into wireless communication terminals (such as wireless network cards, tablet computers and mobile phones) for online use, and the generated traffic or telephone charges are uniformly recorded in the main card package.

Extended data:

Functions of mobile phone accessory card:

At the same time, provide customers with a primary card and a secondary card. The main card and the auxiliary card can be paid together, and the main card is used as the payment account. When the primary card user chooses the basic package, the secondary card user can * * * enjoy the voice, SMS, MMS, data stream, WiFi duration, prepaid call back fee or free call fee in the primary card basic package.

The unified package implemented by the main and secondary cards exceeds the tariff standard; The local interaction of fixed line, main card and auxiliary card is free and unlimited times; The national roaming answering of the secondary card is free, and the caller ID function is free.

Tips: The secondary card does not * * enjoy the value-added services in the basic package selected by the primary card.

Reference: Baidu Encyclopedia: SIM card