Why can I still make calls, send messages and surf the Internet when my mobile phone is in arrears 100 yuan? Thank god, help me.

1. See if your phone number is credible. If your credit is high, you can owe money. 2. Have you ever handled activities such as prepaid phone bills to send phone bills, because you can owe a certain fee for handling such activities. 3. The network is busy or there is no downtime for some reason.