How to change the credit card and original card number on mobile phone:

1. Replace the credit card when the credit card expires: the new card number obtained is the same as the original card number, but the validity period and security code have changed, so there is no need to re- Bind WeChat.

2. Credit card loss report and replacement: Although the new card carries the account information of the old card, except that the pinyin of the cardholder's name remains unchanged, the card number and security code are different from those of the old card, and WeChat needs to be re-bound.

3. Credit card upgrade and replacement: the new card has a higher level than the old card, the card number will be different from the old card, and WeChat also needs to be re-bind