Interesting, looks like a ‘Plus’ thing, I wonder how it reports itself. Xenforo 1.5 may not be equipped for huge smartphones and may view them as tablets, though I’d have thought it was a google thing.
PS I’m way, way behind upgrading to XF v2.x as it is just such a ball-ache that will take hours and hours of my time to configure to the point I’m happy (I’ll need to do all the layout/aesthetics again from scratch as they aren’t ported over), then there’s a load of new administration crap to learn, loads of features I don’t want etc. It needs doing though as where we are isn’t even supported anymore.