How does Unicom send text messages to check traffic?

If you need to use SMS to query traffic, you can edit the message CXLL (case-insensitive) or 107 1 to 100 10 to query the traffic usage of this month as of the previous day. If you need to check the monthly traffic of this number, you can also call the Unicom customer service hotline 100 10, and make an inquiry according to the voice prompts.