The cause of the problem is the network problem. In this case, it is best to connect to a nearby wireless network.
If there is no wireless network, there is nothing wrong with it. As long as the mobile phone is not in arrears, just turn it off and restart it, so it will be faster to reconnect the network signal. Now the network signal base station is well built, and basically there will be no network problems. Sometimes the reason is that the mobile phone has been used for a long time, and there will be a stuck phenomenon. At this time, just wait patiently.
There is also a relatively rare situation, which is network fluctuation. Don't worry. After a period of time, when the network is stable, you can apply for a health code. If it is under the subway with poor signal, it is recommended to apply for health code in advance.
When applying for health code, you must not fill in the wrong information. If you fill in the wrong information, you can't apply, such as ID information and name.
Fill in the information must be true, there can be no fraud. This is not only responsible for yourself, but also for the people around you. Now it is very basic to apply for a health code and fill in the information carefully.