If the cardholder needs to change the telephone number of CCB's credit card, he can do so in the following two ways: \x0d\ Method 1: Change the bank outlet \x0d\ The cardholder can bring his valid ID card and credit card to the CCB outlet to handle the contact information change procedures. \x0d\ Method 2: Telephone change \x0d\ After the cardholder dials the CCB credit card service hotline, he/she will enter the manual service with his/her ID number (or card number) and inquiry password, and notify the bank customer service staff to modify the mobile phone number. If you are not using the original mobile phone, the bank will check your identity information so that the modified mobile phone number will take effect in time. \x0d\