1. We need to simply set the Wi-Fi network and click [application ].
2. Click set to go to the figure below.
3. Click WLAN here, as shown in the red box below.
4. Move the slider to the right of WLAN. Green indicates that the slider is enabled.
5. It's not finished yet. Click the hardware menu of the mobile phone and select advanced settings ].
6. Click set network connection method ].
7. Click automatic.
After the above operations are completed, when you exit the Wi-Fi environment and return, the WLAN will automatically connect. If the mobile data of a person is not connected, we need to open it.
1. On the standby page, slide down the screen curtain with your fingers.
2. Click [WLAN]. The green icon is enabled.
If the above solution still cannot be solved, we can try to restore the network settings of the mobile phone to the factory, or delete the network and try again, if it still doesn't work, we can restore the phone to the factory settings. This generally solves your problem. Of course, the premise is that you have connected to the wifi and the password has not been modified.