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How to switch between iphone dual-card SMS sending and receiving?

1. If you don't need to switch between receiving SMS and sending SMS, you need to switch between them. The specific operation steps are as follows: Step 1, open the message, as shown in the following figure.

2. Step 2: Click the icon in the upper right corner, as shown in the figure below.

3. Enter the recipient in the third step, as shown in the figure below.

4. Step 4: Click the main card that pops up, as shown in the following figure.

5. Step 5: You can choose the primary card or the secondary card to send short messages, as shown in the figure below.