How to Put a Flashing Light on iPhone
A comprehensive, step-by-step guide to enabling LED Flash for alerts on iPhone, with practical testing tips, accessibility considerations, and troubleshooting.

To turn on a flashing light for iPhone alerts, go to Settings > Accessibility > Audio/Visual > LED Flash for Alerts and toggle it on. Also consider enabling 'Flash on Silent' for additional cues. Test by receiving a notification or calling your iPhone and confirm the LED flash activates.
Understanding the purpose of flashing light on
Tools & Materials
- iPhone with camera LED flash(Ensure the device has a working LED flash.)
- Access to the Settings app(You will navigate to Accessibility settings.)
- Test notification source(Use a standard notification or timer to verify the flash works.)
- Optional accessibility aids(Consider enabling related features like Vibration or Audio alerts for combined cues.)
Steps
Estimated time: 4-8 minutes
- 1
Open the Settings app
Unlock your iPhone and tap the Settings icon to access system preferences. This is the first step to reach accessibility options.
Tip: If you use search, you can quickly type 'LED Flash' to jump to the setting. - 2
Navigate to Accessibility
Scroll or search within Settings to find the Accessibility section, which houses display and alert options.
Tip: Accessibility settings often house multiple visual cues beyond LED flash. - 3
Open Audio/Visual under Accessibility
Within Accessibility, select Audio/Visual to access audio and visual alert options.
Tip: This subsection groups features that help you hear or see alerts. - 4
Enable LED Flash for Alerts
Toggle on LED Flash for Alerts to enable the camera LED as a notification cue.
Tip: Turn off other alert sounds if you want the flashing light to be the primary cue. - 5
Optionally enable Flash on Silent
If your iPhone has Silent mode, you can enable Flash on Silent to use the LED flash when the ringer is off.
Tip: This helps you notice alerts in quiet environments. - 6
Test the flash with a notification
Send a test notification or use a timer/alarm to verify the LED flash activates as expected.
Tip: If the flash doesn’t trigger, check hardware or try a reboot. - 7
Check related accessibility cues
Review other signals like vibration, sound, or display alerts to determine the best combination for your needs.
Tip: A mixed approach often yields the most reliable alerts. - 8
Consider device-specific variations
Some older iPhone models or iOS versions may have slightly different paths for LED flash options.
Tip: If you can’t find the feature, check for iOS updates or device limitations. - 9
Maintain and monitor
Regularly test the LED flash after iOS updates to ensure continued functionality and adjust preferences as needed.
Tip: Keep your device charged to ensure bright LED visibility.
Quick Answers
Can all iPhones flash LED for alerts?
Most iPhones with a camera LED support LED Flash for Alerts, but features may vary by model and iOS version. If you don’t see the option, check for a hardware limitation or software update.
Most iPhones with a camera flash support LED Flash for Alerts, but availability depends on model and iOS version.
Will LED flash drain the battery quickly?
Using the LED flash can consume more battery when alerts happen frequently, but it typically has a modest impact compared to continuous screen use. Adjust settings to balance visibility with battery life.
The LED flash uses more power during frequent alerts, but it’s usually modest unless you get many notifications.
What should I do if the flash doesn’t turn on after enabling?
First, confirm you enabled LED Flash for Alerts and tested with a real notification. If it still fails, restart the iPhone, check for iOS updates, and ensure the hardware flash is functional.
If it doesn’t turn on, verify settings, reboot, and check for updates; hardware issues may require service.
Does LED flash work when the iPhone is muted?
Yes. LED Flash for Alerts typically works independently of ringer/mute settings, providing a visual alert even when sounds are off.
LED flash operates independently of sound settings, so you’ll still get a flashing light when muted.
Can I customize the flash rate or color?
iPhone LEDs are hardware-based and do not support color changes or rate customization for alerts. You can adjust rate indirectly by combining with other alerts.
The LED flash color and rate aren’t customizable; you can adjust by using other alert methods in combination.
Watch Video
Main Points
- Enable LED Flash for Alerts under Accessibility settings
- Test notifications to confirm LED flash works
- Use combined cues (vibration, sound) for reliability
- Regularly update iOS to maintain compatibility
- Keep safety and sensitivity in mind when flashing
