Why are you so curious?
the answer is yes, to an extent. You can log the IP of the mobile device, but it depends what they’re using and how they’re using the web.
if they’re running off of a public hotspot, no. if they’re hosting their own net, it’s a more possible. But then there’s the prospect of vpn and what have you.
I think the real question is: has anyone really been far as decided to use even go want to do look more like?