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.

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 ...

as the iPhone introduced their own emoji keyboard and competing phone companies followed suit. The iconic yellow smiley face has an interesting story behind it - and it was around long before the ...