IMPS is widely deployed[citation needed] but not necessarily marketed.
Vanilla terminals often[citation needed] have IMPS clients.
The phones' chat clients are generally designed to be provider neutral, so you have to put in the Wireless Village server settings.
If your phone doesn't have an inbuilt chat client, you might still be able to get a third-party chat application that runs on your phone's Symbian, Java ME, BREW, or other application environment.
You need to get a chat client which is "Wireless Village compliant presence-enabled".