Flash alerts use your iPhone's camera light to notify you of calls and messages

Flash alerts make your iPhone's camera light blink when you get a call, text, or other notification. This feature is useful if you keep your phone on silent, work in loud environments, or need a visual alert you can see from across a room. The setting is built into iOS and takes about 30 seconds to turn on.

Flash alerts work on iPhone 11 and newer models. If you have an older iPhone, this feature is not available on your device. The light pulses once per notification, and you can turn it on or off at any time without affecting other notification settings.

Key Takeaways

  • Flash alerts are available on iPhone 11, 12, 13, 14, 15, and 16 models with the A13 chip or newer.
  • You turn on flash alerts in Settings > Accessibility > Audio/Visual, then toggle LED Flash for Alerts on.
  • Flash alerts work independently of your ringtone and vibration settings — you can use all three at once or just the flash.
  • The camera light will flash for incoming calls, text messages, and other notifications that would normally trigger a sound or vibration.

Open Settings and navigate to Accessibility

Start by opening the Settings app on your home screen. Tap the gear icon, then scroll down and select Accessibility. This menu contains all the features that modify how your iPhone looks and behaves for different needs.

Once you are in Accessibility, look for the section labeled Audio/Visual or Hearing depending on your iOS version. Tap it to open the submenu where the flash alert setting lives.

Turn on LED Flash for Alerts

Inside the Audio/Visual menu, you will see a toggle switch next to LED Flash for Alerts. Tap the toggle to turn it on. The switch will turn green when it is active. That is all you need to do — the setting takes effect immediately.

Your iPhone will now flash the camera light whenever you receive a notification. The light pulses once per alert, so you will see a single bright flash for each incoming call, message, or app notification that your phone is set to alert you about.

Flash alerts work with your other notification settings

Turning on flash alerts does not change your ringtone, vibration, or sound settings. If you have vibration turned on, your phone will vibrate and flash at the same time. If you have a ringtone set, you will hear the sound and see the flash together. You can use all three notification methods at once, or turn off sound and vibration to use only the flash.

Flash alerts respect your notification settings for each app. If you have silenced notifications from a specific app in Settings > Notifications, that app will not trigger a flash alert either. The feature works the same way as your other alerts — it just adds a visual component.

Adjust which notifications trigger the flash

By default, flash alerts trigger for all notifications that would normally make a sound or vibration. If you want to limit which apps send flash alerts, go to Settings > Notifications and turn off notifications for specific apps, or change them to Silent mode.

You can also customize notifications per app. Open Settings > Notifications, select an app, and choose whether it sends sounds, badges, or banners. Flash alerts will follow the same rules — if an app is set to silent, it will not flash the light.

Troubleshooting flash alerts that are not working

If you turned on LED Flash for Alerts but the light is not flashing, first check that your iPhone model supports the feature. Flash alerts only work on iPhone 11 and newer. If you have an older model, the setting will not appear in your Accessibility menu.

If you have a compatible iPhone and the setting is on but you are not seeing flashes, check that notifications are actually turned on for the app you are testing. Go to Settings > Notifications and make sure the app is not in Silent mode. You can also test the feature by having someone send you a text message while you watch the camera light on the back of your phone.

Frequently Asked Questions

Does flash alert drain my battery faster?

Flash alerts use minimal battery because the light only pulses once per notification. The impact is negligible compared to your screen, cellular radio, or other phone features. You can leave the setting on without worrying about battery life.

Will the flash alert work if my phone is in my pocket or bag?

Yes, the light will still flash, but you may not see it depending on how thick the fabric is. The feature works best when your phone is on a table or desk where the light is visible. If you need alerts while your phone is in your pocket, keep vibration turned on as well.

Can I make the flash brighter or change how many times it flashes?

No, iOS does not offer brightness or frequency controls for flash alerts. The light flashes once per notification at its standard brightness. You can only turn the feature on or off.

Does flash alert work for all types of notifications?

Flash alerts work for any notification that would normally trigger a sound or vibration, including calls, texts, emails, and app alerts. They do not work for silent notifications or apps you have muted in your notification settings.