How to switch cards when Apple 1 1 sends a message?

IPhone 1 1 How to switch the secondary card when sending messages with dual cards? Many friends don't know how to operate it. Let's have a look with me.

Apple 1 1 How to switch cards when sending messages 1. When editing a short message, the current default SIM card will pop up after filling in the recipient, and click the default SIM card.

2. After clicking, select the secondary number in the pop-up window.

3. After clicking, you can switch to the secondary card to send short messages.

Note: This article applies to iphone 1 1 mobile phone ios 13 system.

This paper takes iphone 1 1 as an example and applies it to ios 13 system.