1. Check whether the WiFi password is correct.
It is suggested that when entering the password, click the "eye icon" to display the password to ensure it is correct.
2. reconnect to WiFi
Please go to Settings-WLAN, click on the WiFi you need to connect, and then click "Forgot Network/Forgot Password" to reconnect.
3. Check whether the WiFi network is normal.
Please compare whether other mobile phones are normally connected to the same WiFi, and confirm whether it is WiFi or mobile phone. If it is due to WiFi, please restart the wireless router check. At the same time, you can enter the router management interface to see if there are any special functions, such as limiting the number of connections, MAC binding, online time management and so on.
4. Reset network settings
Back up data, go to Settings-System Management-Backup and Reset-Reset Network Settings-Reset Settings, and then use it to view.
Note: Resetting the network settings will clear the connection records such as WLAN, mobile data network and Bluetooth; Dual cards need to select the corresponding SIM card.
5. Restore all settings
You can enter Settings-System Management/More Settings-Backup and Reset/Restore Factory Settings-Restore All Settings-Restore, Restore Settings Options.
This operation will not delete files or software, but will cancel the password and restore all settings, including the set wallpaper, unlocking method, WiFi, default opening program, etc.
note:
Enter cloud service-device cloud backup-backup data type-system data-return-immediately back up some backup system settings and desktop layout;
Cloud service-data synchronization-turn on WLAN and Bluetooth to synchronize data to cloud service. .
If the above methods can't help the recovery, you need the customer service center to detect and deal with it. You can find the address and telephone number of the nearest customer service center through this link: the webpage link. Note: In order to save valuable time, it is recommended to call the service center in advance to confirm the business hours of the service center and whether the spare parts inventory is sufficient.