Take the operation of Android phone as an example:
1. First open WeChat and click Pay on my page; As shown in the figure.
2. After entering the payment, click the city service; As shown in the figure.
3. Then choose your city and click the health code; As shown in the figure.
4. Then the page pops up the mobile phone number authorization, and click Allow; As shown in the figure.
5. Then you will enter the face recognition interface, enter your name and ID number, click OK to submit, and then scan your face; As shown in the figure.
6. After the face recognition is passed, check Agree and click Next; As shown in the figure.
7. Then the page pops up to get location information, and click Allow; As shown in the figure.
8. You can get your own health code after obtaining permission; As shown in the figure.