If the Mijia Smart Air Purifier 6 always shows offline or cannot connect to Wi-Fi in the App, please refer to the following steps:
Confirm that the device is powered on and running normally;
Confirm that the Wi-Fi network is working properly;
Unplug the power cord, wait for 10 seconds to allow the device to discharge, then plug it back in;
Try resetting the Wi-Fi on the device and reconnecting to the Wi-Fi network;
Make sure the Wi-Fi network is 2.4 GHz, the device does not support 5 GHz networks;
Keep the device within range of the router and avoid physical obstructions or interference from other electronic devices;
Persistent connection issues require contacting after-sales service for further assistance.