What is the automatic transmission of 107 1?

According to the information you provided, this short message is an instruction to query the short message traffic. If the SMS sent to China Unicom is a traffic inquiry SMS, it is generally caused by your mobile phone system or the installation of traffic monitoring software (such as 360 Mobile Guardian and Tencent Mobile Manager) automatically sending instructions to correct traffic. Turn off the timing automatic calibration function of traffic in the system to avoid sending short messages. Or you can turn on the settings of the traffic monitoring software on the mobile phone and turn off the automatic sending instruction to correct the traffic. You can also turn off this function and stop texting. If not, I suggest you contact the mobile phone manufacturer for more help.