MobiDict MobiDict is a mobile dictionary to be run on mobile devices that support J2ME (MIDP/CLDC). Provides 10 000 words and simultaneous search for english and german words!
Also online translation function available using Google Translate!
Duden Dictionaries for mobile phones Reliable source of correct and good German from Brockhaus Duden Neue Medien GmbH. Dudens spelling and grammar are regarded as trend-setting and leading on the market