Do all Smart TVs have system on chip (SoC)?

Yes, almost all smart TVs are SoC by definition. Because they have a chip that manages connection to the internet, an app store and often other advanced connectivity features, they need to have an integrated computer chip to handle these tasks.

Which is the best Smart TV/system on chip brand for digital signage?

While we don't have a preferred brand for commercial/business grade smart TVs, we do recommend Sony Bravia, LG webOS and Samsung Tizen. Check our hardware pages for more details: https://screencloud.com/hardware?category=smart-tv

Does ScreenCloud work with all smart TV brands?

Yes, ScreenCloud is hardware agnostic so you can install our software on pretty much any smart TV. And if the TV doesn't have SoC, you can connect your choice of digital signage media player such as PIXI or the Amazon Signage Stick. See our hardware pages for more details.