This situation was most likely caused by an unstable network connection. Some phones may have network connection problems, even if there is a network signal, but the application shows that there is no connection. This could be due to a slow network connection or poor network connection quality. To avoid this situation, you can try the following methods: 1. Reboot the phone. Sometimes, there might be network connection problems with the phone. Restarting the phone could solve it. 2 Clear the application buffer. Clearing the application buffer can improve the quality of the network connection. 3 Close other applications. Closing other applications might free up some memory and improve the quality of the network connection. 4. Change the network environment. If you are using a mobile network connection, you can try to switch to a faster network environment such as China unicom or the telco network. 5 Check the network connection. If you are using a Wi-Fi connection, you can try to check if the network connection is stable and try to connect to a different Wi-Fi signal.