shouldn't be too long before caligra-mobile, or whatever it is called, turns up for the phone: http://www.valdyas.org/fading/index..../14#helsinki_2
Harmattan Office is a document viewer based on the Calligra Office Engine which is part of the open-source Calligra Suite. This application provides an advanced viewer for documents in the OpenDocument Format, binary Microsoft Office documents, and Microsoft OOXML documents, as well as PDF.