Connecting USB devices to Dom0 is discouraged for security reasons. I use a VM with an attached USB controller and it works without a problem. The only thing I have to do is switch the phone to file transfer mode instead of charging otherwise I get an empty folder as well.
-- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/7b3f0060-c3a3-4f90-82c0-9d82e42310bb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.