How to insert iphone 1 1 dual card?

Hello! IPhone 1 1 installing a SIM card:

This dock of iPhone 1 1 can hold two sim cards, one on the front and one on the back. Please install two SIM cards according to the example in the figure. You don't need to care about the location of the main card and the auxiliary card. You can set the main card and the auxiliary card yourself after installation.

Dual card concept of iPhone 1 1

1) major number: "major number" is a label. After the new iPhone is inserted into the dual card, you can mark a number as the main number after setting the application;

2) Secondary number: "Secondary number" is also a label, and another number can be set as a secondary number label;

3) Default number: you can set the major number as the default number or the minor number as the default number.

How to use iPhone 1 1 dual cards together?

There are three situations:

1) Set the main number as the default number, then the main number can do anything (including surfing the Internet), and it is the default number; At this time, the minor number can only answer the phone, receive short messages (can't surf the Internet), or temporarily select the minor number manually when making a phone call or sending a short message (if not manually selected, the major number will be used automatically);

2) Set the secondary number as the default number, you can do anything, and the main number can only answer the phone and receive short messages, which is the reverse of the above;

3) Another function of the secondary number is to set the secondary number for surfing the Internet. After this setting, the main number is used to do other things besides surfing the Internet (of course, it can also be temporarily changed to a secondary number manually when calling and texting, otherwise the main number will be used by default). The main number can't be set to surf the Internet, so it may be better to set the card with large traffic as the secondary number.