Older Nokia devices typically use (Java) or SIS (Symbian) files for applications and simple text or specialized formats for books. Top Reader Apps:
Downloading and reading books on Nokia devices depends heavily on whether you are using a classic Java/Symbian model or a modern Nokia Android smartphone. For Classic Nokia Phones (S40, S60, Symbian) knigi dlia nokia skachat
A solid choice for EPUB files on Symbian S60v5 devices. Older Nokia devices typically use (Java) or SIS
Highly recommended for S60 devices like the N97. It supports MOBI and PalmDOC formats. You can download it from the Mobipocket mobile site. knigi dlia nokia skachat
A popular source for downloading Java-based (.jar) book apps directly. For Modern Nokia Android Phones Mobipocket and eBooks on the Nokia N97 - All About Symbian