Handle via customer service phone, online banking, or branch counter.

1. You can call the customer service number of the credit card issuing bank, select manual service, and after identity verification, inform the customer service of the need to change the phone number, and complete the replacement process under the guidance of customer service.

2. Some banks provide online banking services. You can log in to the online banking and follow the prompts to change your mobile phone number.

3. Go to the branch counter of the credit card issuing bank, bring your valid ID, credit card and new mobile phone number, fill in the relevant application form, the teller will verify the identity information and handle the mobile phone number change procedure.