Smart diagnosis will notify you of any error in the AC. This will save the AC from any damage and further issues. The AC gets connected with the app on your smartphone where you will be notified of any faults in the air conditioner. LG Smart AC with smart diagnosis feature: 1. Best LG Wi-Fi Split AC 1.0 Ton ThinQ Voice Control India 2022 2. Best LG Window AC 1.5 Ton Inverter ThinQ India 2022