Some Symbian 3rd edition phones has a full office applications that can be used to edit and view documents, but others only has QuickOffice for viewing the documents. If you have the full office application, you can also install QuickOffice, because it is faster for viewing only (how many people actually bother to type large amount of text in their cell phone anyway?).This application can be downloaded from the Nokia website and you can see more info at download quickoffice