. Make sure that your TV supports SmartThings. You can check this with the Supported Device menu in the SmartThings app. To use the SmartThings app, you must be signed in to your Samsung account on the TV. This function may not be supported depending on the TV model or mobile device. The supported functions may differ depending on the version of the SmartThings app. You can install the SmartThings app from App Store or Google Play Store.