Pocket Kanji - English-Japanese dictionary (110,000 words and 6,500 kanjis). Works in any MIDP 2.0 supported phones. No japanese font is needed. Can search for words or kanjis with filtering with radical & stroke number.
Suiteki2 Suiteki is a set of Java J2ME japanese related tools for your mobile phone; word dictionary, kanji dictionary, word lists, flashcards and even a manga viewer! Kana/kanji input/display for non japanese phones! (see http://suiteki.sourceforge.net)
Pocket Kanji Lite Japanese-English dictionary. For phones with 1MB JAR size limitation