To change the contact information of your credit card, you can follow the steps below for China Merchants Bank credit cards:

First, make sure you have installed China Merchants Bank’s “Pocket Life APP”. After opening the app, find the "My" option at the bottom of the page and click to enter.

Next, if you have not logged in yet, you need to enter your mobile phone number and login password to complete the login. After successfully logging in, you will see a menu and select the "Profile Management" option to further manage your account information.

In the profile management page, find and click the "Relationship Information" option, where your contact list is listed. Find the contact that needs to be modified, click the corresponding "Modify" button, and the system will jump to the information editing page.

At this time, you can follow the prompts to update the contact's name, phone number, address and other information. After confirming that it is correct, click Save to complete the modification of the contact information. The entire process is simple and intuitive and can be completed in just a few steps.