1. Call the customer service of the issuing bank to unseal it. In case of overdue, you can call the bank customer service to explain the situation and apply for unsealing.

2. Provide coupons for unsealing. If the card is blocked because it is suspected of cashing out, you can provide a valid consumption voucher to the bank to unblock the card.

3. Apply for a new card to be unsealed. Apply for a new card with different card types and apply for unsealing. Old cards are usually unsealed.

4. The consumption abroad is unsealed. When the card has overseas transactions, the card will be blocked for the security of the card. At this time, as long as I confirm the transaction, I can automatically unseal it.

5. Pay off debts and unseal. If the card is blocked due to overdue, after paying off the arrears, call customer service to explain the reasons for overdue. As long as the overdue situation is not serious, customer service can help unblock the card.