Purchases, rentals, and Home Sharing require an Apple ID that you use for the App Store and other Apple services. Requires 802.11 wireless, Ethernet network, or Broadband Internet access Requires 4K and HDR TV for 4K and HDR streaming
Set up Apple TV - Apple Support To use Apple TV, you need: A high-definition or 4K TV with HDMI An HDMI cable to connect Apple TV to your TV (for 4K HDR, you may require a compatible Ultra High Speed HDMI cable, sold separately) Access to an 802.11 wireless network (wireless streaming requires 802.11a, g, n, or ac) or an Ethernet network and broadband Internet Set up your Apple TV – Apple Support Jun 17, 2020
Oct 11, 2019
You will need an internet connection to use Apple TV, but it doesn't have to be wireless. You can connect via an Ethernet cable. If you want to use AirPlay, which allows you to stream content from your iPhone, iPad, iPod Touch or Mac to your Apple TV, you will need a Wi-Fi network. So another option is to connect the Apple TV to the internet using its built-in Wi-Fi card. If you do not connect an ethernet cable, Apple TV's setup will automatically prompt you to connect to a wireless network after you set the default language. Connecting Apple TV to the Internet. Use the Apple TV remote to select the wireless network.
Internet and Network Requirements | Plex Support
Yes and No - If the internet is not available, you can still use a smart TV as regular TV (connect an antenna, cable, satellite, DVD/Blu-ray player, VCR, etc…), you just won’t be able to access the smart features that require access to the internet such as watching Netflix and other streaming services.