There was a time where the AppStore was getting crowded of Emoji enable apps. But apple put an end to that time. But now an app is making this possible by activating emoji as an easter egg and its hidden from apple review team. Spell Number [Link iTunes] Its an app that will spell you the numbers you are typing. But it can also enable the Emoji icons in your devices:

1. Run the application and type in these numbers: 91929394.59

2. Click the Home button and enter in Settings> General> Keyboard> Japanese

3. This section will appear the “Emoji” that you must activate it to have the icons on your devices

4. This will installed a new keyboard and you can try it in any application of your iPhone. To activate it you just click on the button of the globe, next to the spacebar

5. Enjoy the emotion icons that you can send to your friends in email sms and more