Not activated. Activating ABC's mobile credit card requires a security code to show that the card has not been received. This is because the credit card is not activated, so it cannot be used normally. If the credit card is not received, it cannot be activated. There are usually three ways to activate a credit card: through the bank counter where the credit card is located, I need to come forward and my original ID card, credit card; Call the 24-hour customer service hotline displayed on the back of the credit card and activate it according to the prompt of manual service; Log in to Credit Card Online Banking and select Credit Card Activation.