Apple tv
My Apple TV is not connecting to my Internet, I have a Samsung TV
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Do you have an Apple TV set-top box connected to your TV, or do you mean to use the Apple TV app on your smart TV?
If you have an Apple TV set-top box, which model is it? Identify your Apple TV model - Apple Support
The Apple TV set-top box will need it own internet connection, either by Wi-Fi or via ethernet. Which method do you (want to) use? If Wi-Fi, then keep the box free from interference.
Get help with Wi-Fi networks on your Apple TV - Apple Support
Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support