Flash alerts let your iPhone's camera light blink when you get a notification

The flash notification feature on iPhone uses your device's camera light to blink when you receive calls, messages, or other alerts. This is useful if you're in a noisy environment, have your sound off, or simply want a visual signal that doesn't require looking at your screen. The feature works on most iPhone models and is straightforward to enable.

The setting lives in your Accessibility menu, not in the main Notifications settings. This is because Apple groups it with other sensory accommodation features rather than with sound and badge options.

Key Takeaways

  • Flash alerts use your iPhone's rear camera light to blink when notifications arrive, and you turn them on in Settings > Accessibility > Audio/Visual.
  • Once enabled, the flash will blink for incoming calls, messages, and other notifications even when your phone is locked or face-down on a table.
  • Flash alerts work independently of your ringtone and vibration settings — you can have all three on, or use flash alone.
  • The feature drains battery slightly faster because the camera light activates repeatedly, but the impact is minimal for most users.

Where to find the flash notification setting

Open the Settings app on your iPhone and scroll down to find Accessibility. Tap it, then look for Audio/Visual near the top of the Accessibility menu. This section contains features related to sound, vibration, and visual alerts.

Once you're in Audio/Visual, you'll see a toggle labeled LED Flash for Alerts. Tap the toggle to turn it on. The toggle will turn green when the feature is active.

What happens after you turn it on

Once LED Flash for Alerts is enabled, your iPhone's rear camera light will blink when you receive notifications. This includes incoming calls, text messages, emails, app notifications, and reminders — essentially any alert your phone would normally make a sound for or vibrate about.

The flash will activate even if your phone is locked, face-down on a table, or in your pocket. You don't need to do anything else to make it work. The flash will continue to blink at regular intervals until you unlock your phone and dismiss the notification.

Using flash alerts with other notification settings

Flash alerts work alongside your existing sound and vibration settings, not instead of them. If you have your ringtone volume turned up, you'll get both the flash and the sound. If you have vibration on, you'll get the flash and the vibration. You can use any combination of these three.

If you want only the flash alert with no sound or vibration, you'll need to mute your phone (using the physical mute switch on the side) or turn your volume all the way down. Even then, the flash will still activate for incoming calls and messages.

Why the flash might not be working

If you've turned on LED Flash for Alerts but the light isn't blinking, check whether your phone is in Low Power Mode. This mode disables the flash notification feature to save battery. Go to Settings > Battery and turn off Low Power Mode if it's on.

Also verify that the toggle in Audio/Visual is actually green and switched on — sometimes the setting appears to be on but hasn't fully activated. Try turning it off and back on again. If you're still not seeing the flash, restart your iPhone by powering it off and back on.

Battery impact of using flash alerts

The camera light uses a small amount of power each time it blinks, so enabling flash alerts will reduce your battery life slightly. The impact is usually minimal — most users won't notice a significant difference in how long their phone lasts through the day. If you're in Low Power Mode or trying to stretch your battery as far as possible, you may want to disable this feature.

You can always turn the feature back on whenever you need it. There's no penalty for switching it on and off depending on your situation.

Which iPhones support flash alerts

Flash alerts work on iPhone 6s and newer models. If you have an older iPhone, the Audio/Visual menu will still exist, but you won't see the LED Flash for Alerts option. The feature requires a camera light that can be controlled by the operating system, which older models don't have.

If you're unsure which iPhone model you have, go to Settings > General > About and look at the "Model Name" field. It will say something like "iPhone 14" or "iPhone SE."

Frequently Asked Questions

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

Yes. The flash will blink even if your phone is in your pocket, face-down, or in a bag. You won't see it in those situations, but the light will still activate. This is why the feature is useful in noisy environments — you'll feel the vibration or see the light if you glance at your phone.

Can I set different flash alerts for different contacts?

No. The LED Flash for Alerts setting is all-or-nothing — it either blinks for all notifications or none. You can't customize it to flash only for calls from specific people or only for text messages. If you need that level of control, you'll need to use a combination of sound, vibration, and Do Not Disturb settings instead.

Does the flash alert work when my phone is locked?

Yes. The flash will blink whether your phone is locked or unlocked. You don't need to do anything to activate it — it works automatically once you've turned on the setting.

What if I want flash alerts but no sound?

Use the physical mute switch on the side of your iPhone to silence all sounds, or go to Settings > Sounds & Haptics and drag the volume slider all the way down. The flash will still blink even when your phone is muted. Vibration will also continue unless you turn it off in the same menu.