You can red Steve's review of Pdf+ here. Please note this is the S60 version, but the core rendering engine is the same in both versions of the program.
Author's Description
Pdf+ (for UIQ 3.x Smartphones) can display a large number of PDF 1.0, 1.1, 1.2, 1.3, 1.4 and 1.5 files. Pdf+ silently ignores some unimplemented features and non-conforming PDF files, it will complain about other unimplemented features and non-conforming PDF files. Pdf+ is designed especially for Smartphones and Communicators. As these devices are still less powerful than desktop computers, some less-often used PDF constructs are not available.
- Pdf+ can display text in almost any language, in particular when the font used has been embedded. Otherwise, Pdf+ will use the installed fonts to display text. This will only succeed when a ToUnicode translation table has been embedded in the document and when the substituted font contain the used characters.
- For Simplified and Traditional Chinese documents using Type 0 fonts, you need to install the optional Simplified and Traditional Chinese extensions during installation. Documents using Japanese and Korean Type 0 fonts cannot be read at this time.
- For non-Unicode encodings, if the ToUnicode translation table is available, the text can also be searched successfully.
- Pdf+ can only display the complete Symbol and Zapf Dingbats fonts if you have the appropriate font files installed on your device. The built-in fonts only contain some Symbol characters, and none of the Zapf Dingbat characters.
- Pdf+ doesn''t handle the dynamic content of a PDF file, and it cannot render Type 3 fonts.