The Plex for Smart TVs app is available on a wide range of television models by multiple manufacturers.
LG
The app is made available through the Smart TV Alliance for LG televisions. The 2013 “Netcast” and 2014 “WebOS” based models are supported as indicated. You can find the list of supported LG models on the Smart TV Alliance website.
Sony
The app is available through the Opera TV Store for many 2013 and newer Sony Bravia models. (Note that the Opera forum list does include models older than 2013, which are not supported by the Plex for Smart TVs app.)
TiVo
Plex is available on many Series 4 and newer TiVo devices. TiVo devices provided through a TV provider often have various licensing deals in place, which can affect app availability.
Tip: If you get your Tivo device through your television provider, you can contact them to inquire about availability.
Note: The Plex for Smart TVs app on the TiVo platform does not require a Plex Pass subscription, but it is still an early preview version.
Toshiba
The app is made available through the Smart TV Alliance for Toshiba televisions. You can find the list of supported Toshiba models on the Smart TV Alliance website.
VIZIO Televisions
Most 2013 and newer model VIZIO televisions are supported. You can determine whether a model is compatible:
If the app store is named “Vizio Internet Apps Plus”, then the model is compatible
If the app store is named anything else (including just “Vizio Internet Apps”), then the model does not currently support the Plex App.
Downloading the App
Open the “Vizio Internet App Plus store” on your television. You can find and download the Plex App there.
Other Televisions
Other television models and manufacturers aren’t currently supported by our Plex for Smart TVs app. We’re always working to expand our compatibility, though, so new models or brands may gain support in the future.
Instead of the Plex for Smart TVs app, some brands and models are able to run other Plex apps.
Roku TV
Roku TV models can run our regular Plex for Roku app and is available by default on all Roku TVs. They’re also able to run the preview release (available early to Plex Pass subscribers) of our upcoming brand new Roku app.
Samsung Smart Hub
The Samsung Smart Hub app is created by a talented community developer. It isn’t directly developed by Plex.
Original source:
https://support.plex.tv/hc/en-us/articles/204080173-Which-Smart-TV-television-models-are-supported-