The methods for changing the reserved mobile phone number on a credit card are:

1. Modification at the branch counter:

Individuals can bring their ID card and credit card to the branch of the card-issuing bank and report to The staff explained that they need to change the mobile phone number reserved by the bank, and then filled out a modification information form. The staff then made modifications based on the information you filled in.

2. Change of customer service phone number:

Individuals can call the customer service phone number of the credit card center. After being connected, follow the voice prompts to transfer to manual service, and then apply to the staff to change the reserved mobile phone number. , staff can modify it after verifying the identity information.

3. Mobile banking app changes:

Individuals can download and install the mobile banking app on their mobile phones, and then make modifications in it. Taking China Merchants Bank as an example, download the Palm Life app on your mobile phone, log in to your personal account, click "My" on the homepage, then click "Information Management", then select "Contact Information" and follow the prompts to modify it.