At present, there are two kinds of people who will be given gray code; The first category is the people who came to Wuhan from other provinces and failed to carry out three-day two-test nucleic acid detection in time; The second category is those who have not been tested for nucleic acid within 48 hours in Wuhan.
For people in other provinces, the following reasons may cause the health code to turn gray:
1, the mobile phone network signal is not good, which leads to the failure to display the health code or the normal page.
2, mobile phone resolution and color matching problems, resulting in gray health code.
3. The application for new mobile phone number health code may be in the gray code testing stage. According to the current status of users, the latest health risk status is displayed through the background comparison of user registration related data.
4. The area where it is located is the hardest hit area and has been closed for management. No health code will be issued for the time being, and the health code is gray.
5. The gray health code may also be caused by not using it for a long time.
6. The boundary of health code is gray, which means that COVID-19 vaccine has not been vaccinated.