Solutions:
If phone or pad is connected to WiFi but can not access the Internet, it is suggested to try the following troubleshooting steps:
1. Turning off WiFi proxy server settings.
2. Ignoring (not saving) the network and reconnecting.
3. Upgrade to the latest system.
4. If other devices are connected normally, reconnect after disconnecting WiFi.
5. Update router firmware or deactivate or uninstall third-party optimization software.
6. Backup and clear all data to try.
7. If the above methods fail, it is suggested to go to apply for after-sales service.