Hi Steve,
There is no need to create mobile screens in Method New (M:N), as all apps and screens will be compatible on mobile devices (Yay, finally!). With sections and grids, you can set them to be “responsive”. This means that they will collapse and be displayed in a way that makes them easier to read on a smaller screen. You can read more about this in Solution No. 502 of our M:N Help Center.
The session variable Browser Window Size is actually dynamic and changes depending on the current windows size (i.e. not determined on sign in). You can play around with this by changing your browser window size and retrieving the variable. I was able to get it to return the following values: Desktop Wide, Desktop, Tablet Landscape, Tablet Portrait, Small Tablet Portrait & Mobile Landscape. There may be more (I’m noticing an absence of Mobile Portrait), but these are simply the results from my testing.
While you won’t be able to completely restrict the use of a screen via this variable, you can use it to hide/unhide or disable/enable certain elements on the screen when it loads. This will allow you to maintain 1 screen for all devices and still restrict some information on mobile devices.
I do not see a session variable for browser version. What action were you able to locate this and what is the name of the variable?
-Audisho