It is application for B tv remote control of smart device which supports infrared sensor.Samsung Galaxy S series only supports up to s6. s7 or higher is not supported (Samsung does not use infrared sensor)- How to check if app is available model -Method 1. Search the Internet for your smart device model name, infrared or IR, and see if it is the applicable model.Method 2. Look at the top edge of the smart device as another camera (a camera that does not want to use the app). At this time, when you press the button of the B TV remote control app, it is a smart device that can be used when the light comes on.Infrared rays are not visible to the human eye, but can be confirmed with cameras.