How can the elderly apply for a health code without a mobile phone number?

If the elderly don't have a mobile phone number, they can ask their families or relatives to help them apply for a health code. Family members or relatives need to download and register the health code application on their mobile phones, and then use the ID information of the elderly to apply. In the application process, you need to fill in the health status and itinerary information of the elderly. After the application is successful, family members or relatives can send a screenshot of the health code or a copy of the health code link to the elderly, so that the elderly can show their health code when they travel.