Fujian Sanming Unicom's 4g card balance is 100, but it says that I owe money and have to stop.

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. Post-paid users can click phone bill query > bill query > historical bill to view the actual total amount payable last month. If you still have questions about the phone bill after the inquiry, I suggest you contact customer service 100 10 to verify the specific situation.