What does it mean to send text messages with s i m card?

This is an automatic calibration function of mobile phone, which can be used to query the usage information of mobile phone cards, such as traffic and telephone charges.

It can be solved in the following two ways:

Take out the Sim card first and put it back to solve the problem.

1. Press and hold the power button of iPhone for a long time. When the power off option appears, slide the slider to turn it off.

2. Press the power button to start the machine and enter the main screen. Next, take out the Sim card of iPhone and put it back in its original position. Continue to observe whether this situation will happen again. If it happens again, you can contact the operator to check whether there is anything wrong with the calling card.

Second, through the telephone settings to solve:

1. Enter the phone settings and select the phone option.

2. After entering the new interface, select "SIM Card Application" at the bottom.

3. Select any item in the "SIM Card Application" interface and click.

4. After clicking, the following information will pop up. Pick any one.

5. Select "Accept", and then "sim card sending SMS" will be terminated.