A:AnswerFor details on how to mirror your Android phone to your TV, please visit our support pages at https://support.vizio.com/s/article/How-to-Mirror-your-Device-to-your-SmartCast-TV?language=en_US.
A:AnswerVizio is an American TV manufacturer, not Japanese; it is a company founded in the United States and based in California.
Key points about Vizio:
Origin: Founded in the United States.
Headquarters: Irvine, California.
A:AnswerCable boxes can be used with all VIZIO TVs. We would recommend using an HDMI connection between the cable box and TV for best audio and video quality.
A:AnswerUnfortunately I do not have information on Roku products. I would recommend to contact Roku's technical support team for more details and options for their speakers.
A:AnswerIf you mean non-4k programming I would say yes. We have Verizon FIOS cable and don’t have their 4k service. All of the channels are in either SD or HD. We use a Roku for 4k content.