Telecom version Mi 4 often receives 1000 1 short messages. 108 What's wrong?

1. Maybe 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 "100 1" to calibrate the mobile phone traffic. Sending short messages to 1000 1 is free.

2. Look at the software installed on the mobile phone. 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.