Archived:Nokia UI API issues on S60 2nd Edition (Known Issue)
Some methods of Nokia UI API don't work. Also, all the audio and video formats that are supported in MIDP 2.0 and Mobile Media API (MMAPI) are not supported in Nokia UI API.
It is not recommended to use the Nokia UI API anymore in Nokia 6600. It is included in order to maintain backward compatibility, but basically the same features and more are implemented in MIDP 2.0 and MMAPI classes.