Hi there!
Yes, we have noticed that host name resolution is a problem with smartphones.
iOS devices in a workgroup can resolve host names in the "machinename
.local" format. So to instead of using "http://johnsdesktop:7756/" URL, use "http://johnsdesktop.local:7756/".
Android devices, when in a domain-based (non-workgroup) network, should use fully-qualified domain name (FQDN) as host name, instead of mere machine name. The correct URL could look something like
http://johnsdesktop.companydomain.co:7756/"
Best regards,
UltiDev Team.