HanziQ is a free Chinese hanzi flashcard
program designed to run on Java-enabled mobile phones. It
creates a set of simulated hanzi "cards" and the user must use their
hanzi knowledge progress through them. Ideal for killing time
on buses and trains!
HanziQ programs are designed to run
on ANY Java Micro Edition (J2ME)-compatible mobile phone,
and work on all phones we have tested on thus far.