I will answer these questions for you.

1. First, take out the card slot with the card-taking pin and put in the SIM card. 2. After activating the second number, mark the two numbers separately. If you want to make subsequent changes, click Settings-Cellular Network, then click the number whose label you want to change, and then click the cellular phone number label. 3. Set one of the numbers as the default number.

Iphone 1 1 sets dual cards as follows:

1. First, take out the card slot with the card-taking pin and put in the SIM card.

2. After activating the second number, mark the two numbers separately. If you want to make subsequent changes, click Settings-Cellular Network, then click the number whose label you want to change, and then click the cellular phone number label.

3. Set one of the numbers as the default number.

4. When making a phone call, please click the phone number label on the dial near the top of the screen, and then click the number to switch different phone numbers to make a phone call.

5. Regarding the setting of mobile data, only one number can be used for cellular mobile data at the same time. In Settings, click Cellular Network, then click Cellular Data and select the default number.

Iphone 1 1 is a mobile phone released by Apple, which was released on 20 1 1 and 201in September. Iphone 1 1 is designed with anodized aluminum and glass, equipped with A 13 bionic chip, and the super wide-angle camera supports 2x optical zoom.

Hope to adopt. Good luck.