Why do Apple phones often send short messages on Slm cards?

Whether the sim card application is clicked or the sim card application is being updated, just refresh the SIM card application.

1. Enter the phone settings and select the "Phone" option;

2. In the new interface that pops up, select "SIM Card Application" at the bottom;

3. Select a click at will in the "SIM card application" that pops up;

4. Click on a pop-up message casually;

5. Click to accept SMS, and "SMS accepted successfully" will appear. At this point, the "sim card texting" encountered by iPhone4 will be terminated.