A:AnswerCurrently you cannot screen mirror an apple device however, once we release SmartCast 3.0, Apple Airplay 2 and Apple Homekit support this feature will be available.
A:AnswerPandora is currently not a built in application on the SmartCast input. We are continuously evaluating new applications for possible addition to this screen. In the meantime you can cast any of the thousands of Chromecast enabled applications to the TV from any mobile device on your network.
A:AnswerI’m unfamiliar with the ps4 pro, but my xbox one x picked it up as 4K within a matter of just a few seconds. May wanna swap out hdmi cords to see if it helps
A:AnswerThe top button on the left corner of your vizio remote will allow you to change inputs. Press it until you get to the airplay option. There you can stream from your phone or iPad.
Hope this helps.