The credit card is displayed as an invalid card, which means that the credit card has expired or has not been activated and cannot be used normally. So why does the credit card display as an invalid card?

1. Not activated: If it is a new credit card, it cannot be used without activation. You need to contact the card-issuing bank for activation.

2. Wear of the magnetic strip: If the card becomes invalid due to wear and tear of the magnetic strip, the cardholder can go to the bank to apply for a replacement card.

3. Abnormal usage status: If the usage status of the cardholder's credit card is abnormal, the cardholder can find out the reason for the abnormality in the account, and then actively take corresponding measures to solve it.

4. The validity period has expired: If the credit card has expired, you can go to the bank to apply for a card replacement.

When using a credit card, it is recommended that you pay attention to the validity period of the credit card and contact the bank in advance to apply for a card replacement when the validity period is about to end, so as not to affect the subsequent use of the credit card.