If Wireless network connection abnormal on the Mi Smart Projector, please refer to the following troubleshooting steps:
1. Check if Wi-Fi on the projector is turned on by going to [Settings] >> [Network & Internet];
2. Turn off the projector and unplug it from the power source. Turn off the router or modem. Wait a few minutes, then plug in and turn on your router. Plug in your projector and turn it on, then try connecting to the wireless network again;
3. Poor signal strength can cause connection issues. Try moving the projector closer to the router to see if it connects. This might help rule out any signal strength problems;
4. Double-check with the Wi-Fi password is correct. If there's any doubt, try entering the password again carefully, paying attention to uppercase/lowercase characters and any special symbols;
5. If the problem persists, perform a factory reset by navigating to [Settings] >> [Device Preferences] >> [Reset]. Be aware that this will erase all settings and data on the projector;
6. If the above troubleshooting methods can't resolve the issue, please contact local official service center or your seller for further assistance. They will help you in this regard.