How to turn on the flash on the call Xiaomi: all the ways to MIUI 14/15

Do you miss important calls because you can't hear a signal in a noisy room? A flash of light on Xiaomi can be your lifesaver β€” it visually alerts you to an incoming call even in silent mode. This feature is especially useful for people with hearing impairments, in office settings or at night when the sound is off.

Depending on the Xiaomi model and version MIUI (12/13/14/15) The ways you activate a flash vary. In this article, we'll go through all the working methods, from standard settings to hidden engineering menu features. You'll also learn how to adjust the color and frequency of the flash if your smartphone supports it. RGB-backlighting (e.g. Redmi Note) 12 Pro+ or POCO F5).

Important: On some budget models (e.g. Redmi A2 or POCO C50), the flash may not work due to hardware limitations.

Compatibility Check: Does the flash work on your Xiaomi model?

Not all Xiaomi smartphones support light alerts when making calls, and the function depends on two factors:

  • πŸ”¦ Hardware: LED flash (even if the camera is single, like on Redmi) 10C). The Xiaomi 13 Lite without the main camera does not support the function.
  • πŸ“± Version. MIUI: firmware MIUI 10 The option may be absent or may not work smoothly. MIUI 14/15 Advanced settings available.

How to check compatibility:

  1. Open the Camera app and try to turn on the flash. If it works, the smartphone supports light alerts.
  2. See the specifications of the model on the official Xiaomi website in the "Camera" section - flash should be indicated (for example, "Double") LED-flash").
Xiaomi modelSupport for flash on callNotes
Redmi Note 12 Pro+βœ… Yes.RGB-color-lighting
POCO F5βœ… Yes.Requires inclusion in the engineering menu
Xiaomi 13 Ultraβœ… Yes.It only works on MIUI 14+.
Redmi 10A❌ No.There is no hardware support
POCO M4 Pro⚠️ Partially.It only works with root rights.

⚠️ Attention: On devices with AMOLED-screens (e.g. Xiaomi) 12T) Sometimes the lighting is used instead of the screen. LED-This feature is called "Scream Flash" and is configured separately.

Method 1: Standard settings through "Special capabilities"

This is the easiest method that works on most Xiaomi smartphones with MIUI 12 and newer.The instruction is suitable for the Redmi Note 11, POCO X4 Pro, Xiaomi 12 Lite and other mid-budget devices.

Step-by-step:

  1. Open the Settings. β†’ Special facilities.
  2. Go to the Hearing section (some firmware called Sound and Vibration).
  3. Find the Flash Alerts or Light Alerts option and activate it.
  4. In the submenu, select Calls (sometimes you need to turn on separately for messages and alarms).

If there is no option:

  • πŸ”„ Update the firmware to the latest version MIUI.
  • πŸ” Check for hidden menu items (see the Engineering Menu section).
  • πŸ“± Make sure the original firmware is installed on the smartphone (castomy builds can remove this feature).

Update MIUI to the latest version

Check the performance of the flash in the camera app

Make sure the battery is more than 20% charged.

Turn off the power saving mode-->

⚠️ Attention: On some firmware (MIUI 13 for POCO) After the flash is turned on, it is triggered with a delay in 1-2 It's normal behavior, so the system saves battery power.

Method 2: Configure through the engineering menu (for advanced)

If the standard method didn’t work, try activating the feature through the engineering menu, which is suitable for the POCO F3, Redmi K40 and other flagship models where the manufacturer hid the option.

Instructions:

  1. Open the phone app and enter the code: ##3646633##
  2. In the engineering menu, go to Hardware Testing β†’ Audio β†’ Flashlight Settings.
  3. Find options: Flash On Call – turn on (value 1) Flash Frequency – set the blinking frequency (recommended 500ms)

Save the settings and restart the smartphone.

For models with Qualcomm Snapdragon (for example, POCO X3 Pro), the path may be different:

Engineer Mode β†’ Hardware Testing β†’ LED β†’ Flash LED Test
What to do if the engineering menu does not open?
If nothing happens after entering the code: 1. Check if the access is blocked by the antivirus or firewall (turn them off temporarily). 2. Try the alternative code: ##4636## β†’ Go to the tab "Phone Information" and tap 5 times on "Build Number." 3. On some firmware, the engineering menu is blocked - you will need to unlock the bootloader (see instructions for your model).

Engineering menu codeSuitable modelsPartition to set up flash
##3646633##Redmi Note 10/11, POCO X3/X4Hardware Testing β†’ Audio β†’ Flashlight
##4636##Xiaomi Mi 11, Mi 10TBattery Information β†’ LED Test
##225##Redmi 9/9A, POCO M3Calibration β†’ Flash LED

Method 3: Using Third-Party Applications

If the system methods didn’t work, install a specialized application.

  • πŸ“± Flash Alerts 2 – supports color and flash frequency settings, runs on Android 12+.
  • πŸ”¦ Flash Notification is a simple interface that is compatible with MIUI 14.
  • 🎨 Flash On Call – allows you to assign different colors to different contacts (requires Android 11)+).

How to set up:

  1. Download the app from Google Play (avoid third-party sources!).
  2. Permissions: Access notifications (Settings β†’ Applications β†’ Special Access β†’ Notifications) Camera permission (to control flash)
Alert type: Calls


Light source: Flash (not screen!)




Blinking mode: Constant/Mirring

⚠️ Warning: Flash control applications may conflict with system alerts. If the vibration or sound of the call stops working after installation, turn off the application and use the standard settings. MIUI.

Flash Alerts 2

Flash Notification

Flash On Call

System settings of MIUI

Other-->

Method 4: Setup RGB-lighting (for supported models)

Xiaomi flagship models (Redmi Note 12 Pro)+, Xiaomi 13 Ultra is equipped RGB-It's a flash that you can customize to specific contacts, like green for work, red for family.

Instructions for MIUI 14/15:

  1. Open Contacts and select the contact you want.
  2. Click Edit β†’ Additional settings.
  3. Find the option Color Alert (or Light Indicator).
  4. Choose a color from the palette and save it.

For models with custom firmware (e.g. Xiaomi.eu):

  • Install the Magisk RGB Flashlight Enabler module.
  • In the module settings, activate Per-contact colors.
  • Reboot your smartphone.
ModelType of backlightCustomizable colors
Redmi Note 12 Pro+RGB-flash16.7 million shades
Xiaomi 13 UltraDouble LED + RGBColor temperature + RGB
POCO F5 ProRGB (only on MIUI 15)5 preset flowers

πŸ’‘

If RGB-backlight does not retain color after rebooting, disable battery optimization for the Contacts app in the settings MIUI.

Solving the Problem: Why the Flash on the Call Doesn't Work

If the flash doesn’t work after all the settings, check these points:

  • πŸ”‹ Energy saving: Turn off Ultra-economic mode in Settings β†’ Battery. Some firmware blocks the flash to save charge.
  • πŸ“΅ Do Not Disturb: Flash does not work if Quiet or No Sound mode is enabled with visual alerts turned off.
  • πŸ”§ Application Conflict: Uninstall other flash management software (e.g. Flashlight Widget).
  • πŸ”„ Resetting: Return the Special Opportunities settings to factory settings (Settings) β†’ System system β†’ Resetting settings β†’ Resetting special features settings).

To diagnose hardware problems:

  1. Check the flash performance in the Camera app.
  2. If the flash does not work there, there is a problem in the camera module (repair is required).
  3. Run the hardware test through the engineering menu (#6484## β†’ Manual Test β†’ Flashlight).
What to do if the flash flash flashes too fast or slow?
Blinking speed is adjusted in the engineering menu (Flash Frequency) or through applications like Flash Alerts. 2. Optimal values: - 200ms β€” fast flashing (well visible during the day) - 500ms β€” standard-frequency - 1000ms β€” Slow flashing (battery saving) If settings are not available, try changing persist.camera.flash.frequency via ADB: adb shell settings put global flash_frequency 500

⚠️ Note: On Xiaomi models with infrared flash (such as the Redmi Note 8 Pro), the light alert may not work due to hardware limitations.

Additional chips: how to make the flash smarter

You can expand the functionality of light alerts with these tricks:

  • 🎡 Music sync: Flash Music Player makes the flash flash flash in the beat of the music. MIUI 13+.
  • πŸ“Š Schedule: In Settings β†’ Notifications β†’ Alert schedules can set the time when the outbreak is active (for example, only during the day).
  • πŸ”’ Safe Mode: On some firmware (Xiaomi.eu), the flash flash flashes red when battery power is low (<15%).

For owners. POCO and Redmi with IR-blaster:

You can set up an infrared flash as an alert, but this will require:

  1. Install Magisk and IR Flashlight Enabler.
  2. In /system/build.prop, add the line: ro.camera.flash=1
  3. Reboot the smartphone.

πŸ’‘

In the models with AMOLED-In the case of the Xiaomi 13, the screen lighting consumes much less energy than the screen lighting. LED-flash, but less noticeable in bright light.

FAQ: Frequent questions about the outbreak on Xiaomi's call

The flash works, but it blinks very dimly. How do you increase the brightness?
The flash brightness is adjustable at the hardware level and is not customized in MIUI. However, you can: Try another application (for example, Flash Alerts 2 sometimes gives a brighter glow); Clean the flash lens of dust and dirt (use soft fabric); On models with RGB-backlit, choose white - it is the brightest possible. If the problem remains, perhaps a defective LED - contact the service center.
Can you customize different flash colors for different contacts?
Yes, but only on models with RGB-flash (Redmi Note 12 Pro)+, Xiaomi 13 Ultra) and firmware MIUI 14+. Instructions: Open Contacts β†’ Choose a contact β†’ Edit. Click on Additional Settings. β†’ Alert color: Choose from a palette (up to 16 shades available) and other models can use Flash On Call (requires access to contacts).
The flash is triggered by a delay of 2-3 seconds. How do you remove the lag?
Delay occurs due to optimization of MIUI. Solutions: Disable MIUI Optimization for Phone application (Settings β†’ Applications β†’ Application Management β†’ Phone β†’ Battery β†’ Without restrictions). In the engineering menu (#3646633##) install Flash Delay = 0. Update to the latest version - in MIUI 15 the delay is reduced. On some models (for example, POCO X3 NFC), the delay is due to hardware limitations and is not eliminated software.
After the MIUI update, the flash stopped working.
This is a common problem when switching to a new firmware version.Order of action: Reset Special Opportunity settings (Settings) β†’ System system β†’ Check if the permissions for flash control applications have reset. If the problem persists, reset to the previous version. MIUI or wait for the patch (usually the fixes come out within a few minutes). 2-3 weeks after the major update. POCO Redmi with custom firmware (e.g. Pixel Experience) may require manual file editing /vendor/build.prop (add the line ro.camera.flash=1).
Can I use screen lights instead of flash?
Yes, on devices with AMOLED-screens (Xiaomi) 12T, Redmi K50 Pro) Screen flash is available. How to enable: Go to Settings β†’ Screen. β†’ Screen flash. Turn on the option and adjust the color (white is the most noticeable). Adjust the brightness (recommended). 70-80% Advantages of screen flash: No hardware flash (powers even Xiaomi) 13 Lite without a LED). Less battery consumption. Disadvantages: Less visible in bright light. Doesn't work if the screen is off (requires to turn Always On Display on).