A:AnswerIt has Google Chromecast Ultra built in. There isn't much of an interface to speak of on the tv itself. Pretty much everything outside of power, input selection, and volume +/- is done through a mobile app.
A:AnswerThis Display does not have any built in applications. Instead you cast Netflix from your smart phone, tablet, or computer to the display iteself. It does not have bluetooth capabilities other than to pair the VIZIO SmartCast App to fine tune the display settings.
A:AnswerThis model does not currently support sending and audio signal out through Bluetooth pairing. So you would need to connect an audio device (like headphones) to the display using a cord.