Flash notifications let your iPhone's camera flash blink when you get alerts

Flash notifications use your iPhone's rear camera flash to pulse when you receive calls, messages, or other alerts. Instead of (or alongside) sound and vibration, you see a visible light signal. This feature is most useful in loud environments, when your phone is across the room, or if you're deaf or hard of hearing and want a visual alert you can't miss.

The setting lives in Accessibility, not in the main notification panel, because Apple groups it with other sensory accommodation features. You turn it on once and it applies to all incoming alerts on your device.

Key Takeaways

  • Flash notifications appear in Settings under Accessibility, not under Notifications.
  • The feature works on iPhone 11 and newer models that have a dual or triple camera system.
  • Once enabled, your camera flash will pulse for any alert — calls, messages, reminders, and app notifications.
  • Flash notifications work whether your phone is locked or unlocked, but your screen must not be on and actively in use.

Steps to enable flash notifications on your iPhone

Open the Settings app on your home screen. Scroll down and tap Accessibility. This is usually near the bottom of the list, below Display & Brightness and before Privacy.

In Accessibility, tap Audio/Visual. You'll see several options related to sound and light alerts. Look for LED Flash for Alerts and toggle it on. The switch will turn green when it's active.

Your iPhone will now flash its rear camera light whenever you receive an alert. You don't need to do anything else — the feature is immediately active and applies to all notifications, calls, and messages.

Which iPhones support flash notifications

Flash notifications require a dual or triple rear camera system, which means iPhone 11 and all newer models support the feature. If you have an iPhone 10 or earlier, or an iPhone SE (first or second generation), the option will not appear in your Accessibility settings because those phones don't have the necessary hardware.

You can check your iPhone model by opening Settings, tapping General, then About. Look for the line that says "Model" — it will show your device name.

When flash notifications actually work

Flash notifications only trigger when your screen is off or when you're not actively using your phone. If you're looking at your screen, reading an email, or using an app, the flash won't activate even though you'll still get sound and vibration (if those are enabled). This prevents the flash from going off constantly while you're already looking at your device.

The flash also won't work if your phone is in a case that completely covers the rear camera. If you use a case with a camera cutout, the flash should work normally. Some very thick or opaque cases may reduce the brightness of the flash, though it will still activate.

Combining flash notifications with other alert types

Flash notifications work alongside sound and vibration, not instead of them. You can have all three active at once, or you can turn off sound and vibration in your notification settings and use only the flash. This is useful if you want a silent alert that's still noticeable.

To control sound and vibration separately, go to Settings, tap Sounds & Haptics, and adjust the volume slider or toggle Vibration on or off. These settings affect your overall device alerts, not individual apps. If you want to silence specific apps while keeping the flash active, you can manage per-app notification settings by going to Settings, tapping Notifications, selecting an app, and choosing Sounds or Haptics options.

Troubleshooting flash notifications that aren't working

If you've turned on LED Flash for Alerts but your camera isn't flashing, first check that your screen is actually off when the alert arrives. The flash only works when you're not actively using your phone. Try having someone call you while your phone is face-down on a table or in your pocket.

If the flash still doesn't work, restart your iPhone. Hold down the power button and volume up button together (or just the power button on older models) until the power-off slider appears, then slide to power off. Wait a few seconds and turn it back on. After restart, test the flash again by having someone send you a message or call.

Check whether your case is blocking the rear camera. Remove your phone from its case and test the flash again. If it works without the case but not with it, your case may be too thick or opaque over the camera area.

Frequently Asked Questions

Does flash notifications drain my battery faster?

No, the impact is negligible. The camera flash uses power only when it actually flashes, which is brief. Over the course of a day, even with many alerts, the battery drain is not measurable compared to your overall usage.

Can I set flash notifications for only certain apps or contacts?

No, flash notifications apply to all alerts on your device. You can't choose which apps or callers trigger the flash. If you want to silence some notifications entirely, you can manage that in Settings under Notifications by selecting individual apps and choosing their alert style.

Will the flash work if my phone is in Do Not Disturb mode?

Do Not Disturb silences sounds and vibrations, but it does not affect the flash. Your camera will still flash for alerts even when Do Not Disturb is on. If you want to disable all alerts including the flash, use Silent mode by toggling the mute switch on the side of your iPhone.

What if I have an iPhone with a notch but it's older than iPhone 11?

iPhone X and iPhone XS have a notch but don't have the dual camera system needed for flash notifications. The feature requires iPhone 11 or newer. You can still use sound and vibration alerts on those older models.