If you are downloading from a third-party source rather than the Google Play Store:

AirDroid for controlling one phone from another. 2. Steps to Download and Install an APK

This guide explains how to download and install a on your Android device to manage TVs, PCs, or other mobile devices. 1. Popular Remote Control Apps (APK Sources)

Use the app to type search terms or passwords on the TV, which is faster than using a traditional remote.

If using a universal TV app on an older device, ensure your phone has an IR blaster. 4. How to Use the App

Universal TV Remote Control App for IR or Wi-Fi controlled TVs.

Use the digital directional pad (D-pad) on your phone screen.

Troubleshoot connection issues Let me know which of these would help you most!