Would A Streaming App From Smartphones To Switch Be Possible?

[Jizz_Beard_thePirate]

You can control a phone/etc via bluetooth.

Steaming would need data either by wifi or LTE although you can also use usb cable but we already have plenty of apps that can stream your phone to your PC and let you control your phone through your PC or control your phone through another phone and etc... At least on Android anyway

But the issue with wifi/LTE is Lathency