Navigate your Android with Cardboard Can I view my phone with the screen split-duplicated and turned sideways (for use with Cardboard)? I have a controller for navigation.

I am looking to run regular apps, see my regular homescreen, etc., but with the screen split and rotated sideways (for use with Cardboard).
As per today I have found nothing that solves your problem.
(I also don't see any use for it but that is another question.)