Smart diagnosis is a feature that diagnoses the possible causes of product failures. Proceed with the steps below if you own products with the smart diagnosis logo.1. On the home screen, go to the top left Menu > Smart diagnosisPress the top left menu icon on the Home screen and select smart diagnosis.2. After selecting a product, proceed with smart diagnosis by following the guide.Smart diagnosis screen being displayed after selecting the product.   *If the Wi-Fi smart diagnosis is not supported, try running the audible smart diagnosis by following the instructions shown on the app screen. Please be advised that a diagnosis tone is produced while the audible smart diagnosis is in progress.*The screen shown on the instructions may differ from that displayed on the actual app. The availability of products and services may vary depending on the models you own, the region/country you reside in, or the app and product versions.