1. Card swiping is restricted: I used to be able to swipe my card, but suddenly I stopped swiping it. The credit card is in a normal state and has not been blocked, indicating that the transaction is restricted.
2. Can't apply for installment: The best way to know whether the card will be blocked is to swipe the card to see if it can apply for installment, which meets the conditions of installment, but it can't be phased, indicating that the credit card has been controlled by the bank.
3. Being warned by the bank: the credit card transaction is abnormal. After being approved by the bank, the bank will send a text message or call a warning to standardize the use of the card, indicating that the credit card has been controlled by the bank.