
The LED flash on your iPhone can blink when your device is locked and you receive a notification. This can be useful if you don't want to miss a notification while your device is locked.
How to turn on LED Flash for Alerts:
Go to Settings > Accessibility, then select Audio/Visual.
Turn on LED Flash for Alerts.
Turn on Flash on Silent if you want LED Flash for Alerts only when your iPhone or iPad Pro* is silenced.
LED Flash for Alerts works only when your device is locked.
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