What the Action Button Does and How to Reassign It

The Action Button on iPhone 17 is the physical button on the right side of the phone, below the volume controls. By default, it launches the flashlight, but you can reassign it to trigger any of several built-in functions instead — voice memos, camera, phone calls, accessibility shortcuts, or a custom shortcut you create yourself.

The button works the same way whether you press it once or hold it down. You choose one action per phone; you cannot set different actions for a single press versus a long press the way you can with other buttons.

Changing it takes less than a minute and requires no third-party apps. The setting lives in the main Settings app under a dedicated menu.

Key Takeaways

  • Open Settings, tap Action Button, and choose from flashlight, camera, voice memos, phone, accessibility shortcuts, or a custom shortcut.
  • The Action Button performs the same function whether you press it once or hold it down — you cannot assign different actions to each.
  • If you create a custom shortcut in the Shortcuts app first, it will appear as an option in the Action Button menu.
  • You can change the Action Button assignment as many times as you want; there is no limit to how often you switch it.

Steps to Change the Action Button in Settings

Start by opening the Settings app on your home screen. Scroll down and tap Action Button — it appears as its own menu item, not nested under another category.

You will see a list of available actions. Tap the one you want. The options are:

  • Flashlight
  • Camera
  • Voice Memos
  • Phone
  • Accessibility Shortcuts
  • Any custom shortcut you have created in the Shortcuts app

Once you tap your choice, the setting saves when ready. Press the Action Button to confirm it works as expected.

Using Custom Shortcuts for More Control

If none of the built-in options fit your workflow, you can create a custom shortcut in the Shortcuts app and assign that to the Action Button instead. Custom shortcuts can chain multiple actions together — for example, a shortcut that opens a specific contact, starts a timer, and sends a text message all at once.

To create a custom shortcut, open the Shortcuts app, tap the plus icon to start a new shortcut, and add the actions you want. Give it a name, save it, and return to Settings. The shortcut will now appear in your Action Button menu.

Custom shortcuts are useful if you find yourself performing the same sequence of tasks repeatedly. The Action Button becomes a one-tap way to trigger that entire sequence.

What Happens When You Press the Action Button

Once you have assigned an action, pressing the Action Button launches it when ready. There is no confirmation screen or delay — the action starts right away.

If you assign the camera, the camera app opens in photo mode. If you assign voice memos, a new recording starts. If you assign phone, the phone app opens to your favorites. The behavior matches what each app does when you open it normally.

If you assign a custom shortcut, the shortcut runs in the order you created it. If any step requires your input — such as choosing a contact or typing text — the shortcut will pause and ask you before continuing.

Switching the Action Button Back to Flashlight

If you change your mind and want to return to the default, the process is identical. Open Settings, tap Action Button, and select Flashlight. There is no "reset to default" button; you straightforward choose flashlight from the list.

You can change the Action Button assignment as often as you want. Many people rotate between a few different actions depending on what they are doing that day — for example, switching to voice memos during meetings and back to camera during travel.

Troubleshooting: Action Button Not Responding

If the Action Button does not trigger the action you assigned, first check that you are pressing it firmly. The button requires a deliberate press; a light touch may not register.

If it still does not work, restart your phone. Press and hold the side button and either volume button until the power-off slider appears, swipe to power off, wait a few seconds, and press the side button again to turn it back on. After restart, test the Action Button again.

If the button still fails to respond after restart, the hardware may be damaged. Contact Apple Support or visit an Apple Store to have the button tested.

Frequently Asked Questions

Can I set different actions for a single press versus a long press?

No. The Action Button performs the same function whether you press it once or hold it down. You choose one action per phone, and that action triggers the same way every time.

What if I create a shortcut but it does not appear in the Action Button menu?

Make sure you have saved the shortcut in the Shortcuts app and given it a name. Return to Settings and tap Action Button again — the list refreshes when you open it. If the shortcut still does not appear, restart your phone and check again.

Can I use the Action Button to control smart home devices?

Yes, if you create a custom shortcut that controls your smart home setup. The Shortcuts app can trigger HomeKit scenes and devices. Build the shortcut in the Shortcuts app, save it, and assign it to the Action Button.

Does changing the Action Button affect any other buttons on the phone?

No. The volume buttons, side button, and home button (if your model has one) work independently. Changing the Action Button does not change how any other button behaves.

Can I disable the Action Button entirely?

No. The Action Button must be assigned to some action. You cannot turn it off or make it do nothing. If you rarely use it, assign it to something you use occasionally, like voice memos.