Right, I'm recompiling some info I accidentally found yesterday while browsing around. The following guide is for those on FW2.2 who want
emoji functions without having to jailbreak their phone. Credits given to [http://sasa.main.jp/emoji/]. There are separate methods for Windows and Mac users.
For Mac Users:
Step 1Download the vcard.vcf file which I have re-hosted
here.
Step 2Import the vcard.vcf file using iTunes and sync accordingly.
Step 3On your iPhone, open up the vcard (located in your address book) and tap on “Add All 27 Contact Information Items”.
Step 3Congratulations. You can now enable emoji (Settings > General > Keyboard > Japanese > QWERTY) and proceed to use in SMS, Notes, etc.
For Windows Users (also applicable to Mac users):
Step 1Download the vcard.vcf file which I have re-hosted
here.
Step 2Attach the vcard.vcf file to an email and send it to an account; preferably one that you use with the Mail app on your iPhone.
Step 3On your iPhone, open up the vcard.vcf file from the email you sent and tap on “Add All 27 Contact Information Items”.
Step 3Congratulations. You can now enable emoji (Settings > General > Keyboard > Japanese > emoji) and proceed to use in SMS, Notes, etc.
---
Note : Using this method seems to give you a limited capability of emoji. Instead of getting a gui emoji keyboard like you're supposed to, you will need to manually access the 27 sets of emoji characters by typing in a command (emoji, emojia, emojib, emojic etc...) while you are typing your msg. Thnx nokia2003 for pointing it out at 3.30 in the morning.

bro nokia2003 has come up with a alternative guide that incorporates the email method above and also explains this latter part of how to use the emoji if you applied the non jb method.
You can access his guide here.
This post has been edited by wilsoncvt: Nov 25 2008, 04:04 PM