How does Unicom send SMS to inquire about its business?

Because your question is unknown, I suggest you use the SMS business hall to inquire about the relevant SMS instructions.

You can send a short message "100 10" to 100 10, and you can get the main menu of the SMS business hall, reply to the corresponding instructions or directly send specific numbers, Chinese and English instructions to 100 10, and you can pass it. If you need to query short. menuId=0004000 10002？