iPhone autocorrect customisation, abbreviations, emoji

How to add your own 'shortcut' phrases and get your phone to automatically change words, acronyms, and abbreviations into full sentences or emoji symbols

[@tiaretauariki1395]

Fanx! It worked a gem on my grandma😂😂

[@Mrbeardo42]

whoops, noted and corrected!

[@mao4723]

✰︎✰︎

[@mrjerky1982]

iPhonce? Emoji? Not sure I want to take advice on using autocorrect from someone who doesn't seem to have mastered it himself.