Hello! I bought a boxed Kyocera DS-HN1 PDA for my collection, also called Pocket Cosmo.
It seems that it was released only in Japan in 2002. The PDA has its own OS, called Elate OS. They write that it`s based on Java. Some info in Japanese:
https://allabout.co.jp/gm/gc/81325/
I`m interested if anyone knows something about this OS? Any software, games, tips, tricks? I don`t know Japanese, but the only thing I can find is Notepad.
Also Settings and File manager. Tried to put a CF with MP3 and TXT files in it - no luck, only some errors appear on the screen.
Photo of the device. It has JogDial, and the interface has many animated effects.