2. Standby page-Applications-Settings-Application Manager (Applications-Manage Applications)-All-Find the third-party software and clear the data.
3. If you still can't use the third-party software, please uninstall and delete the software and download it again.
4. Try to change other software versions.
The system WLAN cannot be opened in the settings.
Hello, if you can't turn on WLAN in the settings, please restart your phone first. If it still doesn't work after restarting, you can save important data and restore the factory settings of the mobile phone, which should be no problem. If not, it should be the phone hardware problem. Take the mobile phone to the official after-sales inspection.