How to input Emoji on iOS iPhone, iPod & iPad
Go to general settings. Access "Keyboard" settings.
Choose "Keyboards >"
Choose "Add New Keyboard... >"
Choose "Emoji"
When you're going to type, choose Emoji keyboard using the earth sign on your keyboard.
If you want to have a lot of funny text emoticons (>‿◠)✌ try adding Japaneese romaji keyboard.