WITHOUT ROOT YOUR DEVICE, YOU CAN SEE EMOJI ICON IN YOUR DEVICE
Its working fine in TEXT MESSAGING, and other social chat Application.
HOW TO ENABLE EMOJI KEYBOARD
To enable the Emoji Keyboard, please go to home -> Setting
-> Language & Keyboard, then check the Emoji Keyboard to enable it.
To use Emoji keyboard, you need to change the input method
In Gingerbread (Android 2.3.x), change the input method by holding the Text Box, and select the "Input Method", then choose Emoji Keyboard.
*bug fixes and improvements.