How to send a message with a card on iphone?

1. Find and click the dial icon on the desktop of Apple xr mobile phone.

2. Click Address Book in the bottom menu bar.

3. Then find the contact you want to call, such as "ba", and click on the contact.

4. After entering the contact details page, click the main number under the contact name.

5. Then we can see the options of primary number and secondary number in the mobile phone, click the secondary number and then select Done, and then select SMS to send to the contact.