Xiaomi and Redmi smartphones offer users many hidden features that are not always obvious when first familiar with the device. One of these features is the flexible setting of the LED flash, which serves not only to illuminate the scene when shooting, but also to signal incoming calls or notifications. Many owners can not find the right switch for a long time, since it is often hidden in advanced settings or requires activation through the system menu.
In this guide, we will discuss in detail all available activation methods. LED-You'll learn to use the flash as a professional light for your photo, turn your phone into a powerful flashlight, and set up a light for missed calls so you never lose important messages in a noisy environment.
MIUI and the new HyperOS have their own interface features, so the layout of the elements may vary depending on the version of Android and the model of your gadget. We will cover universal methods that will suit both older models like the Redmi Note 9 and the flagships of the Xiaomi 14 series.
Activation of flash in the standard Camera app
The most obvious and frequently used scenario is to turn on the flash directly during the photo shoot. In the standard camera app on Xiaomi, the control of the illuminator is placed on the main screen of the viewfinder, which allows you to quickly respond to changes in lighting. By default, the system often sets the "Auto" mode, but for high-quality shots in the dark, it is better to use manual control.
To activate a constant flash or fill-up mode, open the app and look at the top of the screen, and you'll see a lightning icon. When you press it, you cycle to the automatic, forced, red-eye-removal mode. Forced mode ensures that the LED will work when the shutter is released, regardless of the lighting conditions.
For video recording, the logic is slightly different. When you turn on video mode, a lightning icon is also available, but continuous backlighting during recording can quickly drain the battery and cause the body to heat up. Some models have a video backlight feature that uses a screen or flash to additionally illuminate the face when shooting a selfie video.
- ⚡ Auto: flash only works if light sensor detects darkness.
- 💡 On: the LED lights up at the time of shooting each frame forcibly.
- 🚫 Off: The flash is completely deactivated, even in complete darkness.
- 👁️ Red eyes: a series of preliminary impulses to narrow the pupils before the main frame.
It is worth noting that in night mode (Night Mode), the use of the flash is often blocked by the system, since the HDR and long exposure algorithms work more efficiently without sharp artificial light. If you need to illuminate an object up close, you should switch to normal photo mode or use portrait mode with artificial lighting.
Using a Smartphone as a Lantern
Turning your smartphone into a flashlight is one of the most popular features, and it's very convenient in the MIUI shell. You don't have to open the app every time you look for settings; you can access the LED instantly through the control panel, and this is especially true in emergency situations when the count is seconds.
To activate the flashlight swipe--find your finger from the top right corner of the screen down to open the control center. Find the flashlight icon and press it. The LED will light up immediately. If you want to adjust the brightness, hold your finger on the flashlight icon, a slider will open, allowing you to adjust the intensity of the glow from 10% to 100%.
There is an alternative, faster way available on most gesture-enabled models: Twice quickly press the screen switch off (lock) when the display is turned off. This feature must be pre-activated in the system settings. The path to it usually looks like: Settings → Additional Features → Screen off (or through a search for the flashlight settings).
☑️ Checking the flashlight
It is important to remember the temperature of the device. During prolonged operation at maximum brightness, the LED module can heat up, the system will automatically reduce the brightness or turn off the flashlight if the temperature reaches critical values to prevent damage to the optics or body.
⚠️ Warning: Do not direct the flash on close to the eyes of humans or animals.A powerful LED can cause temporary blindness or discomfort, as the spectrum of glow contains a high proportion of blue.
Setting up light indications for calls and notifications
Many users want their phone to flash when they call or text, even if it’s down.In modern versions of Android and MIUI, this feature is often hidden in the special features section, as manufacturers consider constant display to be a distraction.
To enable blinking, go to Settings → Additional Settings → Special Features. At the top of the screen you will see tabs, select Physical. Here is the flash for notifications. Activate the switch, and the phone will start to give light signals when calls or messages from selected applications arrive.
This feature works even when the phone is asleep, and is useful for people with hearing impairments or those who often miss calls due to loud music or working in a noisy shop, but it is worth considering that frequent blinking can significantly speed up battery discharge in standby mode.
| Parameter | Description | Impact on the battery |
|---|---|---|
| Incoming challenge | Blinking on the bell | Low. |
| Notification of annexes | Messages, emails, messengers | Average. |
| Silence mode. | It works if the silent is on. | Low. |
| Time out | Indicator operating time | Depends on the settings. |
In some custom themes, the light display function may not work properly or be completely disabled by the theme developer. If you have set up but the phone doesn't blink, try changing the theme to standard Classic or Default for verification.
Secrets of the indicator in the background
Flash like a screen magnifier
Few people know that a flash can be used in conjunction with a camera as a digital magnifier, and it's not just a flashlight, but a full-fledged tool for looking at small details, text or checking for microcracks, and the Loop function is built into the special features of the system.
To activate, go to Settings → Additional settings → Special facilities → Now, if you run a magnifier, you can use the zoom of the camera with the constant lighting of the object, which is much more convenient than just shining a flashlight, because the image is enlarged on the screen.
In magnifier mode, there are additional filters available, such as color inversion or black and white mode, which increases text contrast. The flash here works in constant mode, so watch for heating. Use a tripod or wrap your phone if you need to study the object for a long time so that your hands do not get stuck.
- 🔍 Zoom: Digital zoom to 10-15 crucifix.
- 💡 Backlighting: automatic switching on LED magnifying.
- 📸 Photo: the ability to take a photo of an enlarged object.
- 🎨 Filters: inversion, shades of gray to improve readability.
This method is often used by electronics repairmen or jewelers to quickly assess the condition of parts without buying professional equipment. The quality of optics in modern Xiaomi allows you to distinguish the smallest details.
Problems with the outbreak and how to solve them
There are times when the flash stops working despite the right settings, most often the problem is a software failure of the process responsible for the camera, or an application conflict, the first thing you need to do is to completely reboot the device, not just turn off the screen.
If the reboot didn't help, check if the camera is being used by another app: Messenger background processes (Telegram, WhatsApp) or scanners QR-Codes can block access to LED-Close all applications from Task Manager and try to start the camera again.
Also worth checking is the energy saving settings. In Super-Energy Saving mode, the system can force the flash to be turned off to save charge. Switch to the standard "Balanced" or "Performance" profile in the battery menu.
⚠️ Warning: If the flash flash flashes on its own when the phone is not in use, it could be a sign of malware or a malfunction of the proximity sensor.
In rare cases, the problem is hardware in nature. If you hear a crackle when you try to turn on or smell a burn, immediately stop using this feature. This may indicate a failure of contacts or a malfunction of the power controller on the motherboard.
💡
Use the Service app (or "Mi Credit") to perform a hardware flash test. Select "Camera Test" or "Flash Test" to check the module's performance at iron level.
Third-party flash management applications
Standard functionality is not always enough. There are many apps in the Google Play and GetApps store that expand the capabilities of the user. LED-They allow you to create a module. SOS-signals, strobes for parties or adjust the color scheme (if the device has a RGB-lighting, which is rare but occurs in game models).
A popular solution is flashlight apps with a Morse code interface, you type in text and the phone flashes it off, it can be useful in emergency situations or for transmitting signals from a distance, and there are programs that change the color of the flash when you call if the phone is lying up screen (using the screen, but the flash can pulse).
But be careful with permissions. Many simple flashlights require access to contacts, geolocation and microphone, which is absolutely unnecessary for them to work. Only install proven applications with high ratings and a minimum set of requests.
Some apps allow you to set up a "soft" flash for a selfie using a screen, but with smarter algorithms than standard ones. They analyze the face and adjust the color temperature of the screen to mimic natural light, which often looks better than hard light. LED-diode.
💡
Third-party applications give more control, but standard MIUI tools are more stable and consume less battery in the background.