What flash notifications do and where to find the setting
Flash notifications make your iPhone's camera flash blink when you get a call, text, or other alert — useful if you're in a loud environment, wearing headphones, or need a visual signal instead of sound. The setting lives in Accessibility, not in the main Notifications menu, because it's designed for people who need alternatives to audio and vibration alerts.
The flash notification feature works on iPhone 11 and newer models. If you have an older iPhone, your device doesn't have the hardware to support this feature, and you won't see the option in settings.
Key Takeaways
- Flash notifications use your camera flash to blink when alerts arrive, and the setting is in Settings > Accessibility > Audio/Visual, not in the Notifications menu.
- You must turn on flash notifications in Accessibility first, then decide which specific apps trigger the flash in their individual notification settings.
- The flash will only blink when your phone is locked or the screen is off — it won't flash while you're actively using the phone.
- You can use flash notifications alongside sound and vibration, or as your only alert method depending on your needs.
Step-by-step: Turning on flash notifications
Open Settings on your home screen. Scroll down and tap Accessibility — it's usually near the bottom of the list, below Display & Brightness and before Privacy.
Tap Audio/Visual. You'll see several options here: Mono Audio, Balance, Phone Noise Cancellation, and LED Flash for Alerts. Tap the toggle next to LED Flash for Alerts to turn it on. The toggle will turn green when it's active.
That's the global setting. Now your phone is ready to flash, but you still need to tell it which notifications should trigger the flash. Go back to Settings and tap Notifications. From here, you can choose which apps send flash alerts — for example, you might want flash for calls and texts but not for email or social media.
Choosing which apps trigger the flash
In Settings > Notifications, you'll see a list of every app that can send alerts. Tap the app you want to control — start with Phone if you want flash notifications for incoming calls.
Scroll down to the Alert Style section. You'll see options like None, Banners, and Sounds. Below that, look for the toggle labeled LED Flash. Turn it on for any app where you want the flash to blink when an alert arrives. Repeat this for each app: Messages, Mail, Calendar, or any other app you want to trigger the flash.
You don't have to turn on flash for every app. Many people use it only for calls and texts, since those are the alerts they don't want to miss. Email and social media notifications can stay silent and vibration-only.
Why the flash doesn't always blink
The flash only activates when your phone is locked or the screen is off. If you're actively looking at your phone when an alert arrives, the flash won't blink — your phone assumes you've already seen the notification on screen. This is by design, to avoid the flash going off constantly while you're using the device.
If the flash isn't working even when your phone is locked, check two things: first, make sure LED Flash for Alerts is still on in Accessibility > Audio/Visual. Second, make sure the specific app has its LED Flash toggle turned on in the Notifications settings for that app. Both need to be on.
Using flash notifications with or without sound
Flash notifications work independently of your sound and vibration settings. You can have all three active at once — flash, vibration, and sound — or you can use flash as your only alert method by muting your phone and turning off vibration.
To use flash alone, go to Settings > Sounds & Haptics and turn off the toggle for Vibration. Then mute your phone using the physical mute switch on the side. Now only the flash will alert you. This setup is helpful in situations where you need alerts but can't have sound or vibration — during a meeting, in a library, or in a noisy environment where you might not feel the vibration.
Troubleshooting when flash notifications aren't working
If you've turned on LED Flash for Alerts but the flash isn't blinking, the most common cause is that the setting is off for the specific app. Go back to Settings > Notifications, find the app, and check that its LED Flash toggle is on. The global setting in Accessibility only enables the feature — individual apps still need their own toggle switched on.
Another reason the flash might not work: your phone's camera flash might be disabled by a low-power mode or accessibility setting. Check Settings > Battery to see if Low Power Mode is on, and turn it off if it is. Low Power Mode can disable the flash to save battery.
If you're testing the flash and it's not working, make sure your phone is actually locked or the screen is off when the alert arrives. Open a second device and send yourself a text or call, then watch your locked iPhone. The flash should blink near the camera at the top or back of the phone.
Frequently Asked Questions
Does the flash drain my battery faster?
Flash notifications use very little battery because the flash only blinks for a moment when an alert arrives. You won't notice any meaningful difference in battery life. The setting is safe to leave on all the time.
Can I make the flash brighter or control how many times it blinks?
No. iOS doesn't offer controls for flash brightness or the number of blinks. The flash uses whatever brightness your camera flash normally produces, and it blinks a fixed number of times per alert. You can only turn the feature on or off.
Will the flash work if my phone is in a case?
It depends on the case. If the case covers the camera flash completely, the flash won't be visible. Cases with a clear or open area around the camera will let the flash through. If you're not seeing the flash, try removing the case to test.
Can I set different flash patterns for different apps?
No. All apps that have flash notifications turned on will use the same flash pattern. You can choose which apps trigger the flash, but you can't customize how each one flashes.
What if I want flash notifications but no sound or vibration?
Turn on LED Flash for Alerts in Accessibility, mute your phone with the physical switch on the side, and go to Settings > Sounds & Haptics to turn off Vibration. Now only the flash will alert you to incoming notifications.