Showing full screen Acrobat document on mobile

So I have a page where people can read a magazine (basically in A4 format) using the API and the sized container. Switching view to full screen on a computer works perfectly, but when doing the same on a tablet or mobile, the view is turned to horizontal making the document even smaller and forcing people to turn their phones or tablets and actually making the document smaller and less readable.

Anyone know of a way to fix this?