Mobile Phones iPhone & iOS 44 44 people found this article helpful How to Make Your iPhone Flash for Alerts LED flashing light alerts can be super useful in quiet environments By Sam Costello Writer Sam Costello has been writing about tech since 2000. His writing has appeared in publications such as CNN.com, PC World, InfoWord, and many others. our editorial process Facebook Twitter Sam Costello Updated January 31, 2020 iPhone & iOS Switching from Android Tweet Share Email When your apps have an alert or notification for you, they display a message on the screen, make noise, vibrate, or all three (it all depends on your push notification settings). Your iPhone is even better: It can send you silent alerts using an LED flashing light. LED Flash Alerts With this kind of alert, the LED (or light-emitting diode)—used as the flash for your iPhone's camera—blinks when you have an alert. These LED flash alerts allow you to know when you need to check your phone without looking at the screen or having the volume turned on. This is a perfect option for a quiet environment where don't want to be too distracting. LED flash for alerts is available on iPhones 4 or newer and iOS 5 or later. How to Turn On iPhone LED Flash Alerts Once turned on, your phone's flash will now blink when you have alerts or incoming calls. Tap the Settings app on your home screen. Tap General. Tap Accessibility. Scroll down to the Hearing section. The setting is located here because this feature was originally designed for people with hearing impairments who can't hear their phones ringing when calls come in or alerts are sent. Find the LED Flash for Alerts menu. Move the slider to On (indicated by the color green). How It Works Once you have the feature turned on, you're done! The phone does the rest. When you get a phone call, voicemail, or push notification, the LED will flash to get your attention. It's crucial to keep your phone screen-side down because the phone's only LED flash is on its back, you won't be able to see the light if your phone is resting on its back. Sergej Pushkin/Getty Images How to Turn Off Flash on Your iPhone Want to hear sound again with your alerts? Just follow the steps above and move the slider to the Off position instead.