title: How emojis work on iphone and android?
body: <p>On Web I Understand say, slack, uses their own parser and replaces <code>:name:</code> with span tag and background image. But in mobile it seems to be built in. </p>
  
  <p>However, I dont get how it works out between different versions of Android and between IOS and Android. </p>
  
  <p>Is there a universal icons text?</p>
  
  <p>So `:S, :|, ...' if so where can find it. </p>