A:AnswerI don't believe you can download apps that are not programed into the TV. That is why i bought a Samsung because it is one of the few TVs that has the Spectrum app.
A:AnswerHey! I'm able to help with that! On the remote given with the TV, you go ahead and press the little settings button and the number should pop up! if not, click the down button or up button and it should take you to the numbers
A:AnswerI looked for headphone connection. No there is none. There is optical audio connection, which requires additional hardware.
Bluetooth audio connection seems possible, but I could not find how.