Mobile phones often receive text messages about the arrears of mobile phones, but I still have money to check 10086. Why?

It is estimated that this is the reason for buying someone else's mobile phone number with the same ID card. Because one or more other mobile phones are in arrears, when the total arrears cost reaches a certain limit, Mobile will send arrears information to these numbers associated with this ID card, because Mobile thinks that these mobile phones all belong to the same person. So, you will receive similar information. If the arrears reach a certain level, you don't need to pay the phone bill, and your current card may never be turned on unless you make up the arrears of other numbers. This is the policy of moving the current credit limit _