A:AnswerDepending on what type of android device you want to connect, you would use what ever the video output from that device is to the HDMI ports of the TV. example most phone you would use a micro USB to HDMI cable while most android TV boxes would use a regular HDIM cable.
A:AnswerYes. It has built-in Chromecast. so you can use your Google Assistant to stream to it.
By default, the eco mode is ON where when the TV is off, smart features are also not available. However, you can turn this off and have anything stream to it, even when it's off. The TV will just turn on automatically.