According to this article, any contacts you import from your cell address book will not appear in your Desktop app. That is nuts!
Currently, our users e-mail, calendar and contact book do sync between their browser based mail/calendar tool, and their cell phone apps using Active Sync / Exchange format. (We use a program called Group Office for our system, not O365 or Google).
If an old program like Group Office can do that, I am sure RC should be able to do this too. Otherwise, our staff end up with two different sets of contact lists which is a terrible mess.