Defining a variable for desktop vs. mobile participation

You can set the condition in survey flow and create embedded data how the survey is being taken.

Something like this.

Yes, that was my idea as well. However, AFAIK, “Device Type” is not something Qualtrics automatically saves, no? Or am I mistaken, so from the Meta Info I only get: 

Device Type is part of the user agent, but since there are uncountable user agents and devices, I was wondering if Qualtrics has some pre-coded aggregations for it, so that I can basically use a similar survey flow as you have described above.

Ah, nevermind...I just see that Device Type is indeed pre-coded and available in the branch condition! That’ll work.

However, I think with this approach, I can make distinctions between Mobile vs. non Mobile. But how can I distinct mobile from tablet, e.g. iPhone vs. iPad. Because in the device type it also has “Android”, but this could be a mobile phone or a tablet.

Is there any information about how device type is generated?

May be you should make use of screen resolution.

Yes, I found this in another question, but would still need some assistance in setting up the proper JS code: