The reserved mobile phone number of ICBC credit card cannot be modified across banks. Modifying the reserved mobile phone number requires going to the counter of any branch of ICBC. I can fill in the application form with my ID card and bank card.

There are several ways to change the reserved mobile phone number of the bank:

Handle it at the counter of ICBC, go to ICBC with your personal ID card and credit card, and fill out the application form for change of relevant information.

To handle online banking, you need to plug in the U shield and other devices to directly access the computer, log in to the industrial and commercial online banking, and then modify the mobile phone number in the basic information in the personal version of bank online banking.

Call ICBC's "95588" customer service phone through telephone banking, enter the corresponding menu according to the voice prompt, select manual service, and then complete the information modification with the help of customer service staff.