# Flash For Alerts on iPhone: How It Works URL: https://byshahid.com/blog/flash-for-alerts-iphone/ App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322) Author: Muhammad Shahid Updated: 2026-11-04 > Blink the camera LED, the screen, or both when a call comes in. If you miss calls because the phone is face down, in a noisy room, or you cannot hear the ringtone, iOS can flash the LED next to the rear camera, flash the whole screen, or do both. The name and the location changed. - **What it does:** Blink the camera LED, the screen, or both when a call comes in. - **Published for:** any iPhone - **Type:** iOS setting Blink the camera LED, the screen, or both when a call comes in. This page explains what it does, how to use it on an iPhone and which carriers it applies to. I build **Secret Codes: IMEI & Carrier**, a free iPhone app with 317 checked codes and guides, including this one. If you would rather tap than memorise, [get Secret Codes on the App Store](https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322). ## What is Flash For Alerts? If you miss calls because the phone is face down, in a noisy room, or you cannot hear the ringtone, iOS can flash the LED next to the rear camera, flash the whole screen, or do both. The name and the location changed. On current iOS it is Settings, Accessibility, Audio & Visual, Flash for Alerts, and inside that you choose LED Flash, Screen or Both. On iOS 17 it was called LED Flash for Alerts under Accessibility, Audio/Visual. Two switches inside decide when it actually fires. Flash While Unlocked makes it work even when you are using the phone, and Flash in Silent Mode keeps it working when the ringer is off, which is the combination most people actually want. ## How do I do it? - Open the Settings app. - Tap Accessibility, then tap Audio & Visual. - Tap Flash for Alerts and turn it on, then choose LED Flash, Screen or Both. - Turn on Flash While Unlocked and Flash in Silent Mode if you want it to always fire. ## Which carriers does this apply to? | Published for | any iPhone | | Type | iOS setting | | Good to know | Available on iOS 17, 18 and 26. Renamed from LED Flash for Alerts to Flash for Alerts, and the Audio/Visual menu is now Audio & Visual. | _Screenshot: The Secret Codes detail screen shows the steps, the carriers and an Open in Phone button._ ## Related iphone phone and message settings - [Allow Cellular Data Switching](/blog/allow-cellular-data-switching-iphone/) - [Hearing Devices And Hearing Aid Compatibility](/blog/hearing-devices-and-hearing-aid-compatibility-iphone/) - [Allow More Data On 5G](/blog/allow-more-data-on-5g-iphone/) - [Live Captions On Calls](/blog/live-captions-on-calls-iphone/) - [5G Standalone And Voice Over 5G SA](/blog/5g-standalone-and-voice-over-5g-sa-iphone/) - [Background Sounds](/blog/background-sounds-iphone/) See all [iphone phone and message settings](/blog/iphone-codes/phone-settings/) or [every category of iPhone codes](/blog/iphone-codes/). ## How Secret Codes helps Secret Codes keeps this and every other entry a search away. Pick your carrier once and each entry says whether it is published for your line. You can save favourites, add a private note, and record whether a code worked on your line. **Secret Codes: IMEI & Carrier** is free on the App Store: https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322 ## FAQ ### What is Flash For Alerts on iPhone? Blink the camera LED, the screen, or both when a call comes in. If you miss calls because the phone is face down, in a noisy room, or you cannot hear the ringtone, iOS can flash the LED next to the rear camera, flash the whole screen, or do both. ### What else should I know about Flash For Alerts? The name and the location changed. On current iOS it is Settings, Accessibility, Audio & Visual, Flash for Alerts, and inside that you choose LED Flash, Screen or Both. On iOS 17 it was called LED Flash for Alerts under Accessibility, Audio/Visual. Two switches inside decide when it actually fires. ### What are the steps for Flash For Alerts? 1. Open the Settings app. 2. Tap Accessibility, then tap Audio & Visual. 3. Tap Flash for Alerts and turn it on, then choose LED Flash, Screen or Both. 4. Turn on Flash While Unlocked and Flash in Silent Mode if you want it to always fire. ### Where do I find Flash For Alerts? In the Settings app on your iPhone. ### Is there a dial code for Flash For Alerts? No. On iPhone this is not a dial code, so you use the steps on this page instead. ### Which carriers does Flash For Alerts work on? It is published for any iPhone. Available on iOS 17, 18 and 26. Renamed from LED Flash for Alerts to Flash for Alerts, and the Audio/Visual menu is now Audio & Visual. ### Does Flash For Alerts work on Android phones too? These steps are for iPhone. Android phones have their own menus. ### Will Flash For Alerts work outside the US? The iPhone steps stay the same, although some features depend on your carrier and region. ### What if Flash For Alerts does not work on my iPhone? Check that it applies to your carrier first, because carriers decide which services they offer and can change them. If it should apply to your line, contact your carrier. ### What is related to Flash For Alerts? Allow Cellular Data Switching. Let a dual SIM iPhone borrow the other line's data when coverage is better. ### What else is in this category? Hearing Devices And Hearing Aid Compatibility. Pair MFi hearing aids and route call audio straight to them. ### Can I find Flash For Alerts in an app? Yes. Secret Codes, a free iPhone app, includes it with its steps and carrier details. ## Sources - [Apple Support: iPhone User Guide](https://support.apple.com/guide/iphone/welcome/ios)