If you want to enable emoji or emoticons system wide on your iPhone or iPod touch, you need to act fast. Apple has informed developers that as of today, the company will remove from the App Store all apps capable of enabling the emoji everywhere preference feature hidden in devices updated to 2.2 firmware.
iPhone and iPad apps tagged "international keyboards."
Typing Genius Update Puts Emojis on Your iPhone or iPod touch
Typing Genius-Get Emoji is aimed at people who want to get smart about text entry on their iPhone or iPod touch.
No doubt about it: Entering text into Apple's versatile and ubiquitous handheld is its biggest shortcoming.