Open my WeChat software interface and click the payment option.
In the payment interface, find the medical health in the life service.
In medical health, click on the electronic health card.
In the setting interface of electronic health card, click Security Settings.
Continue to click on the personal information here.
Enter a new mobile phone number in the mobile phone number field, and then click Save.
The health code is based on real data, which is declared by citizens on the Internet. After background review, the personal QR code can be generated. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly.