It is recommended that you refer to the following methods:
1. Check whether the WiFi password is entered correctly, such as the letters and letters, special symbols in the password, etc.
2. If the router hides the WiFi name (hidden SSID) in the device WIFI interface, it will not display the name, please
Add the network manually, or close the router to hide the SSID function;
3. Check whether the WIFI band supports the WIFI band supported by the device and router. If the device only supports the 2.4GHz frequency band WiFi, you cannot search for the 5GHz frequency band wifi. You can try the router to try the 2.4GHz band. The setting method can consult the router manufacturer;
4. If other devices can be connected to WIFI, you can enter the router management interface to see if special functions are set, such as: the number of connection quantity, MAC address binding, internet time management, blacklist, etc., you can turn off the corresponding functions;
5. Enter the router management interface to see if the MAC address filtering function is turned on. You can turn off the function or release it for the device. Because the device will open the random MAC address function by default, it may be stopped by the router;