Why do cell phones always let me send text messages?

First, the reason for the failure:

1, which turns on the automatic flow calibration function of the mobile phone.

2.SIM card is bound with other services.

3. There is malware or virus in the mobile phone.

Second, the solution:

1. If you send SMS automatically after opening a software, it is recommended to check whether there are calibration settings in the software settings, such as calibrating traffic.

2. Put the SIM card of the mobile phone in other machines, observe whether there will be problems of the same version, and rule out whether it is related to the SIM card binding service.

3. If you only send SMS automatically in this mobile phone, please back up the data (contacts, information, pictures, etc. ) and try to restore the machine to factory settings.

If the problem still exists, please take the purchase invoice, maintenance card and machine to the service center for inspection and handling.