after a credit card is completed, it is usually in the state of being activated, which is set for safety to avoid unnecessary losses to the applicant.

before the credit card is activated, you can't spend it. After the cardholder receives the credit card, he should call the issuing bank with the phone number registered at the time of application to confirm that the credit card has been received and ask to open the card. This is the process of activating the credit card. After activation, the card can be used normally.