Make sure your Samsung phone and Samsung TV are connected to the same Wi-Fi network
Turn on your Samsung TV
Swipe down on your Samsung phone to open Quick Settings
Tap Smart View
Select your Samsung TV from the list
Tap Start now or Allow if prompted
Wait for the phone screen to mirror on the TV
To stop mirroring, open Smart View again and tap Disconnect
If Smart View is not available, open the SmartThings app
Tap Add device
Select your TV and follow the on-screen steps
If needed, enter the PIN shown on the TV into your phone
Make sure both devices are updated to the latest software
Restart both devices if the TV does not appear
Check that screen mirroring or casting is enabled on the TV settings