I tend to assume that things I know are obvious and widely known, and so I don’t often bother to document them. However, I noticed that a couple of different people did not know this particular very useful trick, so I thought I would share it here for anyone else who might find it useful.
The trick (I refuse to call it a “hack", or even worse, a “life hack") is useful if you often need to type the same snippets of text on an Apple device, whether it’s an iPhone, an iPad, or a Mac. You can do this using only built-in tools from Apple, with no need to install additional components or mess with anything under the hood.
On a Mac, go to System Preferences > Keyboard > Text. Here you can create the shortcuts that will be useful to you. You should have one defined already, which replaces “omw" with “On my way!".
Simply click the + button at the bottom of the window to add your own snippets. I have a couple for my phone number and email address, so that I can simply type “mynum" or “mygmail" to have those appear, with no fear of typos.
This is of course even more useful on an iPhone, where the small keyboard can make it frustrating to type when you can’t rely on autocorrect - and doubly frustrating to type phone numbers in the middle of other text. On an iPhone (or an iPad), go to Settings > General > Keyboard > Text Replacement, and then tap the + to enter your own snippets.
The cherry on the cake of usefulness is that the text snippets will sync over iCloud, so any snippets you set up on one of your devices should be available on all your other devices too.