OK so recently I have found out about this. Now, what exactly does this do? Does it install a completely new software on the phone? Will menus etc.. change? Or will almost everything on the phone be the same (i.e. email folders, etc) with some Push etc from the backend?
Now I have heard that you get a PIN number. For my brother, is it possible to install this, get a new PIN and use it only for BBM (Blackberry Messaging)?