How to change the card for Apple xr to send text messages?

Step 1: First, open the mobile phone desktop, find "Information" and click enter.

Step 2: Click the edit icon in the upper right corner after entering the information interface.

Step 3: Enter the editing interface and click "Recipient".

Step 4: Enter the recipient's number or add it to the address book.

Step 5: The default mobile phone card name will appear after the recipient adds it. Click on the mobile phone card.

Step 6: Then select the mobile phone card to use in the pop-up box.

Step 7: Enter a short message after selecting it, and click Send.