How does Apple XR switch card 2 to make phone calls and send text messages?

1. Find the dialing application on the mobile phone desktop, and click to open the dialing function.

2. In the opened dialing function interface, click on a call record at will.

3. In the jump interface, find the last use and click.

4. After that, you will jump to the preferred number interface, select the secondary number in Always Use, and you can use Card 2 to make phone calls and send text messages.