After the cardholder applies for a credit card, if it is not activated for some reason, the card will not be used normally.

2. Wear of magnetic stripe

If the magnetic stripe information of the credit card is weakened, changed or lost, the cardholder may not be able to read the correct bank card information when conducting transactions with the card.

3. The account status is abnormal.

When the card and account status are abnormal, the credit card of the credit card is also invalid. Such as expired, lost, frozen, etc. It is the reason why the credit card is invalid.