Solutions:
If it is unable to find the WiFi signal of Mi router, it is recommended to:
1. Check whether the device wireless switch is turned on.
2. Check whether the SSID is set in the router or the SSID contains special characters. It is recommended to modify the SSID to any combination of letters and numbers.
3. Modify the wireless channel of the router and turn off that hide the WiFi option.
4. Try to find WiFi of the router by changing other devices.
5. Try to restart the router.
