How does Apple's mobile phone turn off the sim card to send text messages?

Your sim card sent a short message to close it:

Operating environment: iPhone 13 Pro mobile phone, ios 16. 1 system.

1, open the phone settings.

2. Click on the phone.

3. Click on the SIM card application.

4. Select any item in the USIM card application, and take flight inquiry as an example.

5. The following information pops up, and you can choose one at will.

6. Click Accept to close "Your sim card sent a short message" in the pop-up options.