Just because I have a vertical screen doesn’t mean I’m on a phone
Sites are not detecting a portrait screen and deciding that they&#x27;re displaying on a phone.  Someone who switches their monitor to portrait, or resizes a window to be taller than it is wide, is still going to get the desktop view.<p>In this case the author is scaling their resolution, and so their browser is presenting itself to sites as 720px wide.  Sites see that and show a layout optimized for a screen of that width.  Those sites are acting <i>correctly</i>.<p>The author&#x27;s proposed solution is for sites to use DPI instead, but this would thwart the preferences of users who use scaling because they want the whole site to look bigger.