How can I connect multiple phones to display larger screen?

I want a true display extension app. Few apps that do this, are restricted to only image or video or app display sharing. What I need a true bisection of screen between 2 phones/screens so I can have a phone like NEC DOCOMO MEDIA S. Few apps: Mosaic, Airplay, Multisplay, Groupix, Pinch, Group play.

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