1. wechat health code cannot directly change the mobile phone number, but it can be bound with wechat mobile phone number to achieve the purpose of changing the mobile phone number of health code. First open the WeChat app, click My Options at the bottom of the homepage, and then click Settings.
2. Click Accounts and Security again, click the mobile phone number, and then click Change the mobile phone number.
3. Fill in the new mobile phone number, click Next, enter the verification code and click Submit to replace it successfully.
or
1, open WeChat > I > Pay.
2. Click Medical Health.
3. Click on the electronic health card.
4. Enter my electronic health card.
5. Click Security Settings.
6. Click on Personal Information.
7. Enter a new mobile phone number, and then click Save.