In noisy offices, busy streets or subways, a standard melodic ringer is often not enough to hear an incoming call. This problem is especially acute for people with hearing impairments, for whom a visual signal becomes the only way to learn about a call. The function Flashes on calls turns your smartphone into an effective signaling device that attracts attention with bright pulses of light. This is not just a convenient option, but an important element of accessibility built directly into the core of the Android operating system.
Activation of this feature may vary depending on the device manufacturer and firmware version. While on “pure” Android the settings are located in the special features section, manufacturers like Samsung or Xiaomi often put them in their own shells for greater convenience. In this article, we will analyze in detail the activation algorithms for different brands, consider the nuances of working with messenger applications and answer the questions that users have when setting up LED notifications.
Standard activation method through Android settings
Most modern smartphones have a built-in flashlight flashing function, which does not require installing third-party software. To find the switch, you need to go to the main settings of the device. Typically the path looks like this: open Settings, scroll down to section Special capabilities (or Accessibility), then find subsection Hearing or Improving visibility. This is where the required toggle switch is hidden.
The interface may be slightly differ. On some devices the option is called LED flash, on others - Flash on notifications. It's important to understand the difference: some settings only activate flashing for missed calls and messages, while others force the flashlight to work directly during an incoming call. You need to find an item that sounds like “Flash on a call” or similar.
After enabling the feature, the system may ask for confirmation or show a quick reference about how this mode works. Make sure the switch is lit with an active color (usually blue or green). If you do not find this item in the indicated location, try using the search in the settings by entering the phrase “flash” or “blinking.”
⚠️ Attention: On some models of the budget segment, the function may not be available in hardware or may be blocked by the manufacturer to save battery power. In this case, you won’t be able to turn it on using standard methods.
Setting features on Samsung smartphones
Samsung’s One UI shell offers one of the most advanced tools for managing visual notifications. Here the process is placed in a separate menu, which makes it accessible even to inexperienced users. Go to Settings, then select Special features. In the list that opens, find the section Advanced settings or immediately look for the item Flash on notifications.
A unique feature of the devices Samsung Galaxy is the ability to fine-tune which events will cause blinking. You can choose whether the flash will fire only for calls, only for messages from applications, or for all notifications in a row. This allows you to avoid unnecessary flickering of light when the phone is lying on the table during operation.
Also in new versions of the firmware, the “Screen Flashing” function has appeared, which uses the display backlight instead of the LED flash. This can be useful if you do not want to waste battery power running the camera's powerful LED module. The screen will pulse with a certain color, attracting attention, but consuming less energy.
If you have a Samsung, try the “Screen Flashing” function instead of the camera flash - it saves battery power and looks less aggressive in the dark.
Activating the function on Xiaomi, Redmi and POCO
Xiaomi devices run on the MIUI shell or the new HyperOS, where the menu logic is slightly different from stock Android. The path to the treasured setting here is as follows: Settings → Advanced settings → Special features. In this section you will need a tab Hearing. This is where the “Flash on call” switch is located.
It is worth noting that on some versions of MIUI firmware this setting may be hidden in the “Visual Alerts” section. Users often confuse these items when trying to find them in the phone or contacts menu. Remember that global system settings take precedence over individual contact settings.
Model owners Redmi Note i POCO sometimes encounter a situation where the switch is active, but the flash does not fire. This may be due to the operation of the energy saving mode. Check to see if your system is restricting background activity for the notification service. In rare cases, the device may need to be rebooted after enabling the function for the first time to apply the changes.
Setting up the flash on Honor and Huawei
Smartphones from the Honor and Huawei brands running on the EMUI or MagicOS shell have their own algorithm for turning on visual signals. Unlike many other manufacturers, here the setting is often hidden in the menu of the Phone application itself, and not in the general system settings. Open the calling application, click on the three dots in the corner of the screen and select Settings.
In the menu that opens, look for the item Flash on calls or “Blinking”. If there is no such item there, return to the general settings of your smartphone, go to the Special features section and check for the presence of the item Flash on notifications. The logic of operation here is similar: the light signal duplicates the sound signal, helping to notice a call in a noisy environment.
On new models with a high-resolution camera, the flash can be very bright. If you plan to use your phone in bed or in a dark movie theater, consider this fact. A sharp flash can disturb others or blind you if the phone is face up.
☑️ Checking the flash functionality
Third-party applications for advanced control
If the system capabilities of your smartphone are limited or the menu is too confusing, applications from the store come to the rescue. Google Play. There are many utilities, such as "Flash Alert" or "LED Blinker", that intercept the incoming call event and force the flashlight to turn on. Such apps often offer more flexible settings, for example, choosing the blinking color or pulse frequency.
However, using third-party software has its drawbacks. Applications must run in the background constantly, which increases battery consumption. They also require permissions to access the phone and camera, which some users consider excessive from a privacy perspective. Before installation, carefully read reviews and check access rights.
Some advanced applications allow you to configure different flashing modes for different contacts. For example, for important clients the flashlight can blink quickly and for a long time, but for spammers it can blink briefly and rarely. This adds another layer of information, turning your smartphone into a smart notification device.
⚠️ Attention: When installing third-party flash control applications, be sure to give them permission to “On top of other windows”, otherwise they will not be able to activate the flashlight during an incoming call.
| Smartphone Brand | Main path to the menu | Implementation features |
|---|---|---|
| Samsung | Settings → Accessibility → Flash on notifications | There is a choice of flashing type (camera or screen) |
| Xiaomi / Redmi | Settings → Advanced settings → Special features → Hearing | Power saving is often required |
| Honor / Huawei | Phone application → Settings → Flash when calling | Setting is often inside the dialer, not the system |
| Google Pixel | Settings → Accessibility → Flash on notifications | Classic stock Android without unnecessary options |
Problem solving and troubleshooting
It happens that the user followed all the instructions, but the flash did not work when making a call on Android. The first reason may be a conflict with the Do Not Disturb mode. Check the settings of this mode: it may be set to prohibit any visual notifications, even if the sound is turned off. Disable the mode or add exceptions for important contacts.
The second common problem is the failure of the system interface service. Try clearing the Settings app cache or simply restarting your device. Sometimes, after updating the operating system, the settings are reset, and the function must be reactivated manually.
If the flash blinks, but very dimly or with a delay, check whether the camera module is covered with a case or finger. Also make sure that your phone is not in the maximum power saving mode, which often disables all unnecessary functions, including LED indication, in order to extend operating time.
Why does the flash not work in silent mode?
In some versions of Android, the visual notification is tied to the sound profile. If the "Complete Silence" mode is turned on, the system can also block light signals. Try switching to the "Vibration" mode.
Impact on the battery and device life
Many users fear that frequent use of the flash will negatively affect the life of the LED or will quickly drain the battery. Modern LED modules in smartphones are designed to last thousands of hours and have a huge safety margin. Short pulses of light during a call have virtually no effect on the physical wear of the component.
As for energy consumption, one blink consumes a negligible amount of charge. Even if you have a hundred calls a day, the total consumption will be less than 1% of the battery capacity. Real consumption occurs only if you use the flashlight as a constant source of light, and not as an alarm.
However, if you notice that the phone begins to discharge faster after enabling the function, check the background processes. It is possible that the third-party application that controls the flash does not work correctly and does not “fall asleep” after the call ends, continuing to consume processor resources.
Using the flash during a call is safe for the battery and the LED itself, since the duration of the pulses is too short to cause harm.
Is it possible to set different blinking for different contacts?
This is difficult to do using standard Android tools. Usually the setting is global for all calls. However, some shells (for example, older versions of MIUI) or third-party applications allow you to assign specific flashing patterns to selected contacts from the phone book.
Will the flash work if the phone is turned face down?
Yes, it will. The proximity sensor or accelerometer in this case does not block the flash when there is an incoming call, since this is an alarm signal. The LED will work regardless of the position of the device body in space.
Why does the flash blink when there is no call?
Most likely, you have the “Flash on notifications” option enabled, and not just when there is a call. Check your settings: you may have received a message from instant messenger, an email, or a calendar reminder. Disable checkboxes for unnecessary types of notifications in the special features menu.
Does having the flash on affect the quality of the photo during a call?
No, since the camera is not used to take pictures during an incoming call. The flash operates in alarm mode. However, if you try to answer a video call, the system can automatically turn off the flashing so as not to highlight the image of the interlocutor.
How to turn off the flash if it is annoying?
Go back to the same menu where you turned it on (Settings → Accessibility) and move the switch to the inactive position. If you used a third-party application, you need to either delete it or go to its settings and disable the call monitoring function.