A:AnswerThe Spectrum TV app is not available for the Fire TV Edition television.
For a list of compatible devices, please visit:
https://www.spectrum.com/cable-tv/spectrum-tv-app.html
To see all the available apps, go to:
amazon.com > Menu - Shop By Category > Fire TV > Fire TV Apps & Channels > Refine by Device Type select Fire TV Edition TV and search.
A:AnswerYouTube live is on it..i don't stream it so not really sure how'd you go about working it but no you don't have to use Alexa and yes I pretty sure you can cast it from your phone
A:AnswerOutside dimensions of the 39" TV are: 20.6" screen height; 22.3" height with feet; 34.8" across. Don't know the dimensions for a 40" TV...do they make a 40"?
A:AnswerThe Spectrum TV app is not available for the Fire TV Edition television.
For a list of compatible devices, please visit:
https://www.spectrum.com/cable-tv/spectrum-tv-app.html
To see all the available apps, go to:
amazon.com > Menu - Shop By Category > Fire TV > Fire TV Apps & Channels > Refine by Device Type select Fire TV Edition TV and search.
David M. - Insignia Support