Missed calls in a noisy environment or when the phone is face down in a bag is a common problem for many users. Vibration is not always felt through thick clothing, and sound signals may be drowned out by external noise. It is in such situations that a visual indicator becomes an indispensable assistant.
The flash function for an incoming call is built into most modern devices based on Android, however, the path to its activation may differ significantly depending on the model and version of the operating system. Manufacturers often hide this option in the deep depths of the menu or rename it for ease of localization.
In this article we will analyze in detail all the possible ways to enable the light indication. You will learn not only about standard settings, but also how to use third-party utilities if the standard functionality of your smartphone turns out to be reduced or hidden.
Standard Android system settings
You should start searching for the treasured option from the native settings menu. In "clean" Android and near-stock shells, this option is usually located in the accessibility section. This is logical, since the light indication was originally intended as an auxiliary function for people with hearing impairments.
To activate, you need to go to Settings → Accessibility → Hearing. Here you will see a switch responsible for notification flash. In some firmware versions, the path may look different: Settings → Access control → Flash on notifications.
Please note that the menu may contain a separate item to configure the behavior of the indicator. The system allows you to choose whether the LED will blink only when making calls or also when receiving SMS messages and other notifications from applications. This flexibility helps save battery power if you don't need constant light noise.
It is worth considering that the interface may change with each firmware update. If you do not find the desired item along the described path, try using the search inside the settings menu by entering the query "flash" or "indicator".
Use the built-in search in the settings section (magnifying glass icon at the top of the screen) to instantly find the "Flash on notifications" item without wandering through the menu manually.
Features of shells from Samsung, Xiaomi and other brands
Large smartphone manufacturers often modify the standard interface Androidby adding their own features or changing the menu structure. This leads to the fact that the same functions on different devices are located in completely different places.
On smartphones Samsung with a shell One UI the setting is as follows: go to Settings → Accessibility → Advanced settings → Flash on notifications. Here you can also enable the "Camera flash" option, which will work even if the phone is locked.
Device owners Xiaomi, Redmi i Poco s shell MIUI or HyperOS it is worth checking the section Settings → Advanced settings → Accessibility → Hearing. In some cases, this feature is duplicated in the Phone application through the advanced call settings menu.
Devices from Huawei and Honor often have this option in section Settings → Accessibility → Short light signal. It is important to understand that item names can be translated differently, so look for synonyms related to light or sound signals.
- 🔍 Samsung: Accessibility → Advanced settings.
- 🔍 Xiaomi/Redmi: Additional settings → Special capabilities.
- 🔍 Huawei/Honor: Accessibility → Short light signal.
- 🔍 Realme/Oppo: System settings → Accessibility.
⚠️ Attention: In some budget smartphone models, the manufacturer can programmatically disable the ability to use the flash when making a call to save LED or battery life. In this case, standard methods will not be able to enable the function.
Using third-party applications
If you do not find the required switch in the system settings, applications from the store will come to the rescue. Google Play. Developers have created many utilities that intercept the incoming call event and forcefully activate the camera flash.
One of the most popular solutions is the application Flash Alerts. It has wide functionality: it allows you to adjust the blinking frequency, select applications for which the display will work, and even create your own blinking patterns. Installing such apps takes only a couple of minutes.
Another reliable option is Calls Flash. This application has a minimalistic interface and low resource consumption. It works in the background and has virtually no effect on the battery life of the device, which is a critical parameter for many users.
When installing third-party software, be sure to grant it all the necessary permissions. Typically requires access to the camera, phone status, and display on top of other windows. Without these rights, the application will not be able to correctly control the LED during an incoming call.
☑️ Setting up a third-party application
Problems with flash operation and their solutions
Sometimes it happens that the function is enabled in the settings, but the LED does not light up when there is a call. Most often, the reason lies in a software conflict or malfunction of the notification service. First, try restarting the device.
If restarting does not help, check if Do Not Disturb or Energy Saver mode is enabled. In battery saving mode, the system can block the operation of additional indicators to extend the operating time of the smartphone. Disable these modes and check the function again.
You should also make sure that the flash is not occupied by another process. For example, if you have the camera app open or the flashlight in manual mode, the system may block automatic flashing during a call. Close all background applications and try calling your number.
In rare cases, the problem may be due to an outdated firmware version. Check for system updates in the Settings → About phone → Software updatesection. Installing the latest version can fix software errors that prevent the indicator from working correctly.
| Problem | Possible cause | Solution |
|---|---|---|
| The flash does not blink | Energy saving mode is on | Disable battery saving |
| Only the screen blinks | Incorrect accessibility settings | Activate item "Camera flash" |
| Firing delay | RAM overload | Clear background applications |
| Function not available | No flash module or blocked Software | Use a third-party application |
Why did the flash stop working after the update?
Permissions for system applications are often reset after major Android updates. Go to the application settings, find “Phone” or “System interface” and check if they have permission to use the camera and flash.
Setting through the engineering menu and codes
For advanced users, it is possible to configure the light indication through the engineering menu. This method requires caution, since changing unverified parameters can lead to unstable operation of the device. Use it only if other methods have not worked.
To enter the engineering menu, open the "Phone" application and enter a special code. For most processors MediaTek the combination ##3646633##is used. For processors Qualcomm the code may differ; often it is ##4636##.
After entering the code, the service menu will open. You need to find the section related to Hardware Testing or LED. Here you can test the operation of the LED and change its response parameters. However, the interface of this menu highly depends on the specific chipset manufacturer.
Be extremely careful when navigating through the engineering menu. Do not change parameters whose purpose you do not know, especially those related to processor frequencies or voltage. Incorrect actions may lead to the need to flash the device.
⚠️ Attention: The engineering menu is intended for service specialists. You make any changes at your own risk. Before starting work, it is strongly recommended that you make a full backup of your data.
The impact of the setting on battery consumption
Many users fear that activating the flash during a call will significantly reduce the operating time of the smartphone on a single charge. Let's see how justified these fears are from a technical point of view.
Modern flash LEDs consume relatively little energy, especially if they operate in pulse mode. Brief flashes lasting a few seconds with each call are unlikely to be noticed even by the most sensitive charge meters.
The real power consumption becomes noticeable only if you receive hundreds of notifications a day and each of them is set to a long flash. Under normal conditions of use, when the phone rings 5-10 times a day, the impact on battery life will be minimal, within the margin of error.
However, if you are planning a long trip without the possibility of recharging, it makes sense to temporarily turn off the light indication. You can do this quickly through the quick settings panel or accessibility widget, if your shell supports such display.
In normal usage scenarios, flash during a call increases battery consumption by less than 1-2% per day, which is a negligible amount compared to the operation of the screen or mobile data.
Is it possible to customize the flash blinking color?
In standard Android settings, color selection is usually not available, since a monochrome white flash LED is used. However, some third-party applications allow you to simulate different colors by flickering frequency or using an on-screen flash if the phone has an AMOLED display.
Will the flash work if the phone is face down?
Yes, this is the main advantage of the indicator light. The flash is located on the back of the device, so it will be perfectly visible no matter how the smartphone is laid. This makes the function indispensable for notifications in noisy places.
Why does the flash blink when the phone is charging?
This is a separate system function that signals when it is connected to the network or charging is complete. It is not related to the call settings and is controlled in another section of the menu, usually in the battery or display settings.
Does the turned on flashlight affect the operation of the flash during a call?
Yes, if you manually turned on the flashlight, the system will not be able to use the LED to signal a call, since the resource is busy. Before waiting for an important call, make sure that the flashlight is turned off.
Is there a difference in the flash on old and new Androids?
On new versions of Android (10, 11, 12 and higher), the system manages background processes more aggressively. This can lead to delays in flash firing in third-party applications, while the standard function works stably on any version.