How to turn on Flash for Alerts on an iPhone (iOS 27)

howtosimply.com/guides/how-to-turn-on-flash-for-alerts-on-an-iphone/ · Checked October 2026 · iPhone 17e · iOS 27.0.1

Device

iPhone

Shown on

iOS 27.0.1 (iPhone 17e)

App

Settings

Path

Settings › Accessibility › Audio & Visual › Flash for Alerts

Real screenshots

4 of 4 steps

Checked

October 2026

Sources

1 official, linked below

Step by step

1. 

   Tap Flash for Alerts

   In Settings, Accessibility, Audio & Visual, it is at the bottom under Visual. Ours said Off.

   Done

2. 

   Turn on Flash for Alerts

   The Flash for Alerts switch is at the top of the page.

   Done

3. 

   Choose what flashes

   LED Flash was ticked on ours. Screen flashes the display, Both does both. Flash While Unlocked and Flash in Silent Mode are below.

   Done

4. 

   Turn it off again

   Flip the Flash for Alerts switch off. LED Flash stayed ticked on ours, ready for next time.

   Done

If you do not see this option

• Which light? Apple says it is the LED next to the camera lens on the back. Source: Flash the iPhone screen or indicator light for notifications

If this does not work

• No flash while using the phone? Turn on Flash While Unlocked. Source: Flash the iPhone screen or indicator light for notifications
• The light never works? Check the torch too: iPhone camera or flash not working: fixes to try.

About this guide

Flash for Alerts blinks the light on the back, the screen or both when a notification arrives, so you see it in a noisy place.

The screenshots are from our iPhone 17e with iOS 27.0.1, in Dark mode. It was off on ours; we turned it on and off again.

Good to know

If alerts do not arrive at all, see iPhone notifications not showing: 7 settings to check.

In short: Settings, Accessibility, Audio & Visual, Flash for Alerts on, LED Flash, Screen or Both.