How can I find out how much money my Unicom mobile phone owes?

If you need to inquire about the arrears, you can log in to the online business hall/homepage, and click phone bill inquiry > account balance to inquire about account balance, customer name, available balance, mobile phone number and frozen balance information. If you owe money, your available balance is negative. Short message inquiry about arrears is not supported for the time being. You can also call the local customer service hotline 100 10 to inquire about the arrears.