I'm trying to identify if it's possible to figure out which form fillouts are coming on desktop vs. mobile. For our blog subscribe, we have a form that completely changes styling for its responsiveness, so would be good to know which of these is more effective by comparing our fillouts with traffic.
However, I don't see an option to select an "Is Mobile Device" constraint similar to how you can with email activity.
Is there another way to identify this, separate from using totally different forms?
This is actually really useful for tracking the source of subscribes, too, using the referrer information. Unfortunately some program limitations won't allow us to use URL parameters on all of our social stuff, so being able to use visited web page with a referrer containing t.co or twitter will help fill in those gaps.