How to change the mobile phone number in the health code when using it? Let's take a look together. Enter the mobile phone WeChat and click on me in the lower right corner. Click to enter the payment. Click to enter the epidemic prevention health code. Select provinces and cities, and click to view epidemic prevention and health codes. Click Report Now. Modify your mobile phone number and rebind it. When creating a health code, you should be optimistic about the number you choose and then bind it.