Xsmax does not display the primary card and secondary card when sending short messages.

Apple doesn't display the primary card and the secondary card in the short message, because the information content has not been edited. Only after editing the content can you select the primary card and the secondary card on the SMS content editing page. The operation method is as follows:

1. First click the information button on the iPhone interface.

2. Click the Create button in the upper right corner of the screen.

3. Click the "Main Number" button,

4. Select the auxiliary number from the dialog box below.

5. After editing, click Send to send the message with the secondary card.