Mobile phones always send 102 and 108 to telecom operators.

Mobile phones always send 102 and 108 to telecom operators for the following reasons:

Some software will automatically check the account balance and send text messages. The mobile phone itself does not send text messages automatically.

If you can't confirm which software operation sent it, you can back up the data and restore the default settings of the mobile phone.

It may be that the software in the mobile phone has turned on the automatic traffic calibration function, so the mobile phone automatically edits the short message "108" every day and sends it to "1000 1" to calibrate the mobile phone traffic.

Sending short messages to 1000 1 is free.