Use the Samsung SmartThings App to control TVs and projectors.
Control your Samsung TV or projector with your phone using SmartThings Universal Remote Phone
Open the Google TV app, tap "Connect TV," and enter the pairing code shown on your screen. Use the Samsung SmartThings App to control TVs
Most major brands have dedicated apps that offer advanced features like keyboard typing and voice control. tap "Connect TV
If you have multiple different brands, a universal app can consolidate them into one interface.
The method you use depends on whether your devices are "Smart" (connected to Wi-Fi) or "Non-Smart" (use infrared).
Download their official apps from the Google Play Store or Apple App Store. For Any TV (Universal Apps)