Back when I was learning this in it's infancy...I tried it with a blackberry user and it didn't work. Cannot elaborate on what happened because I don't know why, and at the time would not know how to investigate further anyway...

Haven't looked at the links you have provided either. Again because probably still would not know why...

But at the same time don't know enough to help more! But not seen a post in here in age and thought i'd say something!