The phone's WiFi doesn't work

Solutions:
If the phone can not turn on or turn off WiFi, please follow the following steps:
1. Try it after resetting the network.
Go to Settings - Connection & sharing - Reset WiFi, mobile networks, and Bluetooth Settings and click reset settings,
2. Check whether third-party Apps have been used. If so, uninstall such Apps.
3. Reboot the phone and try again.