An emoji is a visual representation of an emotion, object or symbol. Emoji can are in modern communication apps such as your smartphone’s text messaging or social networking apps such as Facebook, Instagram, Twitter, and Snapchat. To access your library of emoticons in any app, tap the smiley face icon on the keyboard.
This will reveal a library of emoticons organized into categories. On iOS your most recently used emoticons are displayed, followed by emotive images, animals/creatures, food, sports/activities, motor vehicles, technology/equipment, hearts/symbols and flags. The categorization is a bit convoluted and not well organized. Often, it might be difficult to find an emoticon you want. Apple promises to make this easier in the next version of iOS by activating words into emotions by just tapping them.