Experts warn certain emoji could be used as evidence in court, as Netflix’s 'Adolescence' exposes coded criminal 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.

It stands to reason that, like a Valentine's Day heart, a red heart emoji means love. But what does a white heart emoji mean?

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 ...