How much does it cost for Unicom to send a text message to check the phone bill details?

Send 10 1 to 100 10 to check the phone bill of the current month; Send 102 to 100 10 to query the available balance, send any Chinese characters to 100 10 to get the instruction menu, and send corresponding numbers to query the corresponding business information according to the contents displayed in the menu. But it seems that I can't find the details of the SMS, so I can only go to the online business hall for details.