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 ...

From simple smiley faces and love hearts to high heels and rainbows, it seems like there is already an emoji for every possible situation. Now, iPhone users have even more designs to use.

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.