Have you heard of an App called iEmoji? Well, if you haven’t I suggest you head on over to their site and have a look. Its a great little app if you like putting emoticons(emotional icons) when using SMS, MMS or Emails when using your iPhone. In some ways its a must have App on your iPhone and I agree — iEmoji is compatible with iPhone and iPod touch & requires iPhone OS 2.2 or later. Thats all you really need.

Have a read of what Apptism has to say.

Web pages built with iPhone specific emoji are displayed properly only when viewed with the Safari browser on an iPhone (or iPod Touch) with iPhone OS 2.2 or higher.