Are you missing important calls because you can't hear the signal in a noisy room? Or just want to add a visual alert to your standard ringtone? Setting the flash to blink when there is an incoming call solves both problems - and this is done in just a few taps. But not all users know that such a function is hidden in the depths of the menu Samsung solves both problems - and this is done in just a few taps. But not all users know that such a function is hidden in the depths of the menu special features, and on new models with Android 13/14 its place has changed.

In this article you will find up-to-date instructions for all modern smartphones Samsung Galaxy (including rulers S24/S23, A54/A34, M34 and others), as well as alternative methods if the standard method did not work. We will look at:

  • 🔍 Where exactly to look for the setting in One UI 5/6 (and why it is not in the "Sounds" section)
  • 📱 Step-by-step screenshots for different versions of Android (10-14)
  • ⚙️ How to adjust the color and blinking frequency (if supported)
  • 🛠️ What to do if the flash does not blink despite the settings being enabled

Important: the function works only on models with LED flash (for example, Galaxy S23 Ultra or A52). On budget devices without a flash (like Galaxy M04), this method is not applicable - but there is a workaround with a screen backlight.

📊 Is your Samsung model?
Galaxy S23/S24
Galaxy A54/A34
Galaxy M34/M23
Another model
I don’t know

1. Standard method: enable via "Accessibility"

The most reliable method is to use the built-in function "Notifications with flash". It is available on all smartphones Samsung s Android 10 and newer, but the path to it differs depending on the version One UI.

For One UI 5/6 (Android 13/14):

  1. Open Settings → Accessibility
  2. Select Advanced settings → Flash notifications
  3. Activate the switch Flash on calls
  4. Optional: turn on Flash on notificationsif you want flashing for SMS and instant messengers

For One UI 4 (Android 12) and older:

  • 📌 Go to Settings → Accessibility → Hearing capabilities
  • 🔦 Find the item Flash notifications and turn it on
  • 🔔 Make sure that the slider below is activated Calls

Note: On some models (for example, Galaxy S20 FE) the function may be called Light notifications or Visual signals. If you don’t find it, use the search in the settings (magnifying glass icon at the top of the screen).

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2. Alternative method: flash flashing applications

If the standard method does not work (for example, on custom firmware or after resetting the settings), you can use third-party utilities. The best options:

  • 🔆 Flash Alerts 2 - supports customization of color and blinking frequency, works on Android 10+. Link in Play Market
  • 💡 Flash On Call - simple interface, minimal resolutions, compatible with Samsung Knox
  • ⚡ Flash Notification - allows you to assign different colors to different contacts

How to configure (on example Flash Alerts 2):

  1. Install the application and open it
  2. Grant permissions to Camera and Notifications
  3. Enable switch Flash on Call
  4. In section Customize configure:
    • 🎨 Flash color (if supported)
    • ⏱️ Blinking frequency (we recommend 1-2 Hz)
    • 🔔 Exceptions for specific contacts
💡

If the flash does not blink after installing the application, reboot your phone - this will reset the permission cache.

Warning: Some applications require permission to Special access (in Android settings Do not provide it to apps with suspicious reviews - this may break). work Samsung Knox.

3. Setup via ADB (for advanced users)

If you are not afraid of the command line, you can enable flash blinking via ADB (Android Debug Bridge). This method is useful if:

  • 🔧 The standard setting is not in the firmware
  • 🛡️ You do not want to install third-party applications
  • 📱 You have custom firmware (for example, LineageOS)

Instructions:

  1. Enable Developer mode (tap on Build number 7 times Settings → About phone)
  2. Activate USB debugging in the developer menu
  3. Connect the phone to the PC and run the command: 
    adb shell settings put secure flash_notification_enabled 1
  4. To check the current state: 
    adb shell settings get secure flash_notification_enabled

    (must return 1)

Important: On some models Samsung (for example, Galaxy S22 s One UI 5.1) this parameter can be reset after a reboot. In this case, you will need to re-execute the command or use Tasker for automatic application.

If you have enabled the function, but the flash does not fire when you make a call, check these points:

Problem Possible cause Solution
The flash does not blink in the "Silent" mode The setting conflicts with the sound profile Disable "Mute" or add an exception for calls
Flashes only when unlocked Do not disturb mode is activated Check the DND settings in the notification panel
The flash works, but very dim Low battery level Charge the phone to 30% or higher
The function disappeared after the update Reset settings One UI Turn it on again c Special features

🔹 Special. case: On some models (for example, Galaxy A73the flash blinking is turned off when charging is connected. This is done to save battery resources. To bypass the limitation, use wireless charging or disconnect the phone from the network during a call.

What to do if nothing helps?

If none of the methods worked, check the physical condition of the flash: start the camera and turn on the flashlight. If the LED does not light, the problem is in the hardware (possibly oxidation of the contacts or damage to the flexible cable. In this case, only a service center will help.

5. color indication and customization

On flagship models Samsung (starting from Galaxy S21), advanced flash settings are available:

  • 🌈 Color indication: You can assign different colors for different types of notifications (for example, blue for calls, green for SMS). applications like Flash Alerts 2.
  • ⏳ Blinking duration: In some firmware you can configure how many seconds the flash will light after the call ends (default - 3-5 seconds).
  • 🔇 Quiet mode with backlight: The combination of silent mode with visual notifications - ideal for meetings or cinema.

To activate color indication:

  1. Install Flash Alerts 2 from Play Market
  2. Go to Custom Colors
  3. Assign colors for:
    • 📞 Incoming calls
    • 💬 Messages
    • 📧 Notifications from applications
  • Save settings and test

    • 💡 Tip: If you have Galaxy S23 Ultra or newer, try the combination of flash flashing with Always On Display. To do this, enable the option Rise to wake up in the screen settings - this way you will receive a double visual alert.

    6. Power consumption and impact on the battery

    Many users worry that constant flashing of the flash drains the battery. Let's take a look at how critical this is:

    • 🔋 Energy consumption: One ​​blinking cycle (1 second) consumes ~0.001% of the charge. With 10 calls a day, 20 seconds of blinking is ~0.2% of the battery.
    • 🔄 Impact on LED resource: Modern LEDs are designed for ~50,000 hours of operation. With an average load (10 minutes of blinking per day), they will last ~27 years. Samsung designed for ~50,000 operating hours. Under average load (10 minutes of blinking per day) they will last ~27 years.
    • ⚡ Optimization: In the settings of some applications (for example, Flash Alerts 2), you can limit flash operation when the charge is low (for example, below 15%).

    To minimize battery consumption:

    ⚠️ Attention: If you notice that your phone begins to discharge faster after activating the flash flash, check if it is running in the background due to a glitch. Open Settings → Applications, find the app for controlling the flash and look at its power consumption in the section Battery.

    7. Safety and Cautions

    Although the flash's blinking feature seems harmless, there are a few things to keep in mind:

    • 🚨 Epilepsy and photosensitivity: Fast blinking (more than 3 Hz) can trigger an attack in people with light sensitivity. Set the frequency to no more than 2 blinks per second.
    • 👁️ Effect on vision: Do not look directly at the flash at close range (less than 30 cm) while blinking - this may cause temporary blindness.
    • 🔐 Confidentiality: Flash can attract attention in public places. If discreteness is important to you, use it only for important contacts.

    🔹 For owners Galaxy Z Fold/Flip: On folding models, flash blinking may be unstable due to design features. Before use, check whether the case is blocking the LED.

    If you use the phone at work or in places with strict rules (for example, on an airplane), it is better to disable the function in advance to avoid awkward situations.

    💡

    A flashing flash is not only convenient, but also safe: it helps you not to miss important calls in noisy places without distracting others with sound signals.

    Frequently asked questions

    ❓ Why is there no "Notifications with flash" option on my Galaxy A14 ?

    On budget models Samsung (series A0x, A1x, M0x) function can be disabled at the firmware level. Try:

    1. Update your phone to the latest version One UI
    2. Use a third-party application (for example, Flash Alerts 2)
    3. Check if the setting is hidden in the developer menu (type "flash" in the settings search)

    If all else fails, your model may not support this feature hardware.

    ❓ Is it possible to make the flash blink in different colors for different contacts?

    Yes, but only using third-party applications. Standard firmware Samsung does not support color differentiation. We recommend:

    1. Install Flash Alerts 2 or Color Flashlight
    2. In the application menu, select Custom Contacts
    3. Assign colors for the desired subscribers

    Limitation: not all models Samsung support multiple flashing in different colors due to LED hardware limitations.

    ❓ The flash blinks, but very weakly. How to increase the brightness?

    The brightness of the flash depends on:

    • 🔋 Battery level (below 15% - brightness automatically decreases)
    • 🌡️ Phone temperature (at overheating, the LED dims). data-i="243">Charge the phone to 50% or higher
    • ⚙️ Energy saving settings (turn off Battery optimization for flash control application)

    To increase brightness:

    1. Charge your phone to 50% or more
    2. Reboot the device
    3. In the application settings for the flash, select the mode Max Brightness (if available)
    ❓ Does flash blinking work in the "Not" mode? disturb"?

    Depends on the settings:

    • 🔔 If Do not disturb is allowed skip exceptions for calls, the flash will blink.
    • 🚫 If complete shutdown notifications are selected, there will be no blinking.

    To configure:

    1. Open Settings → Notifications → Do Not Disturb
    2. Select Allow exceptions
    3. Activate Calls and Repeated calls
    ❓ Is it possible to use the screen backlight instead of the flash?

    Yes! If your model has Samsung no LED flashes (for example Galaxy M04), you can set the screen to blink:

    1. Install the application Screen Flash Notification
    2. Grant permissions for notifications and overlays on top of other windows
    3. Select the backlight color and blinking frequency

    Minus: the screen backlight consumes more battery than the LED flash (up to 1-2% per 10 seconds of blinking).