Smart TV

A smart TV, also known as a connected TV (CTV), is a traditional television set with integrated Internet and interactive Web 2.0 features, which allows users to stream music and videos, browse the internet, and view photos. Smart TVs are a technological convergence of computers, televisions, and digital media players. Besides the traditional functions of television sets provided through traditional broadcasting media, these devices can provide access to over-the-top media services such as streaming television and internet radio, along with home networking access.

Problems of having a Smart TV
If you have a Smart TV and don't have Internet access, use it as a regular TV with DVD or Blu-ray players or set-top boxes.

Devices that work on an SmarTV
Some Smart TVs have HDMI and even AV video output, so modern or old consoles, all Roku models (although not necessary), DVD and Bluray players, etc. could work perfectly.