Over time, emoji meanings have become subjective, depending on a message's context and wider cultural trends. Which shaking smiley face should you use? Is there a difference between each ...

Of the six billion emoji that are sent globally every day, around 70% are emotion based – for example, smiley face, love hearts. A smaller proportion of the emoji sent are sad expressions.

That's why emojis are fast becoming the cool new way to text and talk. Emojis have been around since 1999, but these winky faces and random picture characters just recently caught on in America.

An curved arrow pointing right. Apple just unveiled animated emoji, which they're calling "Animoji." They can be used in the Messenger app and can be used as stickers or sent to a friend as a video.