Question: how to connect wireless display from mobile to tv?
Answer: Connect to your TV with Smart View. Important: Make sure your TV is turned on and connected to the same Wi-Fi network as your phone. ... 
Project your Windows 10 PC to a TV. ... 
Access Smart View with SmartThings. ... 
Screen mirror using a DeX cable or HDMI cable. ... 
Cast your device's media. ... 
Use the Smart View app.