The biggest hurdle is understanding how unicode works, and creating an http connection that reads UTF-8 bytes.

Step-by-step:

1. Make sure you have Arial Unicode MS font or any other unicode font.
2. Update properties file in phone emulator with the wanted unicode font. (as explained here: Enabling Unicode Charset on the Emulator)
3. Now its a good time to use a very simple code in order to test if our Unicode Emulator is working. I used this Hello World Japanese code, and the result was very exciting:
   
   
4. Next I created a very simple webpage with some UTF-8 encoded characters (hebrew is easiest for me). I wrote a simple http connection app, using the following bit of java code – UTF8 Http Connection. This is the result I got (hebrew text in the red box):

   
5. Tried a few different languages. Got it to work in most common charsets (at least the ones that I need for my translation application). Here is the text in Simplified Chinese Characters: (… don’t ask me why, but the text says “hi my name is gilad… Do you have some cheese?“)
   
   
6. Next phase is to deploy this simple app onto the Nokia N80. When I tried that I got an “Unhandled Expression” error.

Useful functions and classes:

• InputStreamReader() – An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and decodes them into characters using a specified charset. Each invocation of one of an InputStreamReader’s read() methods may cause one or more bytes to be read from the underlying byte-input stream.
• DataInputStream() – A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way. Data input streams and data output streams represent Unicode strings in a format that is a slight modification of UTF-8.

Useful Links:

Java tutorial on using unicode

MIDP Fonts

Unicode Text Editor software