10010Why does the mobile phone automatically reply when sending a text message 107 1?

107 1 is the instruction of China Unicom to query the mobile Internet traffic.

It is estimated that you have checked the traffic, so the mobile phone has the function of automatically editing 107 1 and sending it to 100 10, in order to check the mobile phone's internet traffic conveniently.

In addition, you can directly edit CXLL and send it to 100 10, and you can also query the mobile Internet traffic.