1. Online banking modification: the cardholder logs into personal online banking; Enter the online banking interface, and then click the Security Center in the tab above. Find the modified reservation information on the left, and then enter the new reservation information.

2. Modification of business hall: the cardholder carries his ID card and credit card to a nearby bank outlet to handle the "inquiry and maintenance of personal customer contact information" of the bank, and inquire whether the mobile phone number exists in the contact information and mobile phone contact information. If the mobile phone number already exists, just tell the salesperson to change it.