If your Smart TV is running on Amazon Fire TV, you can control it remotely via your smartphone with this
You'll need to know this isn't the official Fire TV Smart controller app, but this app does allow you to control it.
Based on the device you're using, you can choose from different remotes in our app.
With this app, you can use your Fire Stick or Fire TV even if you can't find your remote control. However, it requires that your phone has an IR sensor.
The app lets you control your Fire TV or Fire Stick even if you can't find your remote control. However, you should note that the app requires your phone to have an infrared sensor or wifi connection.
In order for the app to work and to allow connections to the tv, you need to enable "ADB debugging" on your tv device:
* Go to - Settings > My Fire TV > Developer Options > Make sure "ADB debugging" is set to ON.
* After selecting your TV from the app, make sure to select OK on the popup window on TV.