There seems to be, or seems that there will be a way to access instant messaging services through QtMobility. There is currently a QMessage::InstantMessage Type, and even the QtMobility tp and tp2 branch documentations available online at:
mention in the messaging API that:
The other day I compiled and tried the latest master branch atA unified interface for manipulation and storage of SMS, MMS, Email and XMPP messages is provided.
and this was not possible, but I was wondering if anyone has tried to do instant messaging with any of the tp branches. Does it work?