I have read this post and understand it is obviously not a smart idea to display the portrait layout on a horizontal (say 16:9) screen. However, many newer screens are able to rotate up (to 9:16) so I wonder if there is any short cuts to display the same portrait layout on such a screen, just like the one in this ad (which sells for $600 while we can buy a standard tiny 2.4G miracast receiver for less than $20).



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