Most people still talk to Siri as if it needs a full sentence to understand them, but it doesn’t.
If you say a time, Siri knows you want an alarm. If you say a duration, it assumes you’re setting a timer. No “Hey Siri, set…” required. Just the number or time, and you’re done.
Here’s how it works. Activate Siri and say a time like “11 a.m.” or a duration like “20 minutes.” Siri automatically creates an alarm or timer without asking follow-up questions.
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This works anywhere Siri is available, including with AirPods, CarPlay, and Apple Watch. You can also say things like “20 seconds” or “4 hours” and get the same result.

This shortcut eliminates unnecessary words and reduces friction whenever you use voice commands. Saying a full sentence feels slow and awkward, especially when your hands are busy or your attention is elsewhere.
Using shorthand lets you spend less time talking to your phone and more time getting back to whatever you were doing. It also makes Siri feel more responsive, since you’re triggering the action almost instantly.
I use this constantly throughout the day. When I’m cooking, I’ll say “25 minutes” without looking at my phone. When I’m working, I’ll quietly say “30 minutes” to start a focus timer without breaking concentration.
Even first thing in the morning, saying “4 a.m.” is faster than fumbling through the Clock app or forming a full command out loud.
Once you start using Siri this way, the old habit of full sentences feels unnecessary. You’ll default to the shorthand without thinking about it, and Siri will feel less like a voice assistant you have to manage and more like something that just keeps up.