1. If the main card is shut down, the secondary card cannot be used anymore. The main card and the supplementary card complement each other. The supplementary card can only be used when the main card is in normal condition. If the status is abnormal, such as the main card being frozen, reported as lost, stopped payment, etc., the supplementary card will be restricted from use. You can only use the supplementary card when the status of the main card is abnormal. However, if the lost primary card is just lost, the card status is still normal, and the secondary card can be swiped as usual; in order to avoid risks, it is best to report the loss of the lost primary card and then apply for a new one, but because the primary card After the card is reported lost, it will be temporarily frozen. The secondary card cannot be used again until a new card is activated. The secondary card can continue to be used after the primary card is reissued.

2. A supplementary card refers to a bank card that is subordinate to the use of multiple bank cards under the same account. The function of the supplementary card is that it can carry out consumption and cash withdrawals like the main card, and all of them will be charged to the main card account. All transaction details of the supplementary card are listed on the statement of the main card, making it easier for the main cardholder to understand the usage of the supplementary card. Although the secondary card enjoys the same credit limit as the primary card, the primary cardholder can also set a credit limit for the secondary card that is lower than that of the primary card. Generally speaking, the cardholders of the supplementary card can only be the parents, spouse, children, etc. of the main cardholder. Operations such as card opening and password setting of the secondary card are independent of the primary card, but can be handled by the primary card holder. The annual fee is generally half of the primary card.

Credit card, also called credit card. It is a non-cash transaction payment method and a simple credit service. A credit card is a credit certificate issued by a commercial bank or credit card company to consumers with qualified credit. Consumers holding credit cards can shop or consume at specially designated commercial service departments, and then the bank will settle the accounts with merchants and cardholders. Cardholders can overdraft within the prescribed limit. Credit cards are divided into primary and secondary cards. Under normal circumstances, a primary credit card can be used for 3 secondary cards. The secondary cards can share the rights and benefits of the primary card, as well as the maximum credit limit. There are two main ways to apply for a supplementary credit card: Apply with the principal card. When applying for a principal credit card, the principal card applicant only needs to check the "Apply for supplementary card" column in the credit card application form and fill in the name of the supplementary card. personal information. The primary and secondary credit card cards are sent together; after applying for the primary card, the primary cardholder needs to go to a bank branch to pick it up or download the application form from the bank's official website, and fill in the information in the application form including the primary card number and secondary card column information. , the main cardholder and the secondary cardholder sign their names respectively and submit it to the bank.