Oh ok, so something like this from 2006?
I can't find a video, but that's the phone, and Android version details, they apparently revealed during the Oracle trial. I agree the prototype phone *looks* like a generic Blackberry but the OS implemented "functional apps included the dialer, home screen, messaging app, contacts, and an early example of Android's ubiquitous WebKit-based browser; implementations of Google Talk, Gmail, Calendar, MMS, "chat-based SMS" (presumably a threaded messaging app), and POP email".
Considering this was before
the iPhone was released I suppose you could technically say that it was developed as a competitor to the Blackberry.