How to use a text expander on iPhone

Text expansion on a Mac is a solved problem: you type an abbreviation, it turns into a paragraph. On a phone there’s a catch - you can’t always remember your own trigger codes on a device you use standing up, one-handed, in a hurry. So most phone expanders make you pick: memorise codes, or give up on triggers entirely.

Fast Reply doesn’t make you choose. The same saved reply can be typed (give it a short trigger like omw, type it, it expands inline) or tapped (browse your folders and pick it off a key). Remember the trigger, it’s instant; forget it, the reply is still one tap away.

The two approaches - and why you want both

	Type a trigger	Browse and tap
How you insert	type a code, it expands	read the label, tap it
Works when you’ve forgotten the code	falls back to tapping	yes
Good for	short, high-frequency strings	full replies and paragraphs
Discoverable by someone else	learn it once	yes, immediately

omw for “on my way, about ten minutes out” is genuinely faster to type than to hunt for. But for the reply you send forty times a week and haven’t opened in a month, a visible key you can just tap wins. With Fast Reply you get the fast path when you remember it and the forgiving one when you don’t - from one library.

Setting up expansion that you’ll still use in March

1. Save the five messages you actually retype. Not twenty aspirational ones - five real ones.
2. Enable the keyboard: Settings › General › Keyboard › Keyboards › Add New Keyboard › Fast Reply.
3. Tap the globe key in any app to switch to it.
4. Put a blank wherever the text changes.
5. Give the ones you send most a short trigger - then type it on the keyboard’s typing page and it expands. (The typing keyboard is free; autotext expansion is part of Pro.)

That last step is what makes the difference between a library you keep and one you abandon. A reply like:

Hi [name] - confirming [day] at [time]. I’ll send the address the morning of.

covers every appointment you’ll ever book. Fast Reply asks for the blanks on the way out, so you never send a template with a placeholder still in it. Greeting, date, time and clipboard resolve on their own.

Things worth checking before you commit to any expander

• Does typing require Full Access? Most custom keyboards ask for it before they’ll insert a single character. Fast Reply doesn’t - Full Access is only needed for sending images or files and for the clipboard placeholder, and what you type is never logged or transmitted either way.
• Can it hold more than a flat list? Nested folders and rule-based collections are the difference between 30 snippets and 300.
• How do attachments work? A link inserts inline with the reply; a logo or price sheet attaches too and drops onto your clipboard to paste in, saving the second message.
• Can two people share one set? If a team answers the same questions, one shared source beats five diverging copies. In Fast Reply that means handing a folder over as a private link today; a continuously-synced team library is coming soon.

Where it goes beyond expansion

Once the replies are in one place, the other surfaces come free: a widget for the two you send most, an iMessage app, a Share-sheet action, Siri shortcuts, and AI Assist to reword something warmer or shorter in a tap - on device, on supported iPhones.