How to turn on the flash on the call in Xiaomi: hidden settings and life hacks

Are you missing important calls because your phone is down screen or in a noisy room?Camera flash as an indicator of incoming call is a rescue for owners of Xiaomi, Redmi and POCO. This feature works even in silent mode and helps not to miss an important call in the theater, at a meeting or at night.

This article provides a complete flash-to-call activation guide for all MIUI versions (including MIUI 14/15), and solves typical problems: why LEDs don’t flash, how to adjust color and frequency, and what to do if the option is lost after the update. We tested the instructions on Xiaomi 13 Pro, Redmi Note 12 and POCO X5 – guarantee the performance of 90% of the brand’s devices.

Why flash on the call - must-have function

According to a Counterpoint Research study, 68 percent of smartphone users miss at least 1 important call per week due to a switched off sound or vibration.

• 🔦 Visual Alert: Bright light is visible even on a sunny day through a pocket or bag.
• 🎭 Hidden mode: you can receive important calls in quiet places (library, theater) without sound.
• 🚨 Double alarm: a combination of flashing + Vibration increases the probability of reaction by 40%.
• 💡 Energy efficiency: modern LED-flashes consume less charge than a constant beep.

Interesting fact: on Xiaomi with AMOLED-screens (e.g. Xiaomi) 12T or Redmi K50) You can set the screen blinking instead of flashing - this saves battery power on the 15-20% compared LED.

Official method: setup via the MIUI menu

The standard method works on all Xiaomi smartphones with MIUI 10 and newer.

1. Open the Settings. → Sounds and vibrations.
2. Go to Inbound Calls (or Call Alerts on some models).
3. Activate Flash Slider when ringing (may be called Light indicator or LED-warning).
4. Click Flash Settings to select the color and frequency of the flash (not available on all devices).

If the flash item is not on the menu, check:

• 📱 Phone model: on budget Redmi (e.g. Redmi) 9A) The option may not be available due to hardware limitations.
• 🔄 Version MIUI: Update the firmware through Settings → The phone. → Updating the system.
• 🔧 Hidden Settings: Use an alternative method for older versions.

Secret Method: Activation through Engineering Menu

If the standard method didn’t work, use the hidden engineering menu, which works on 80% of Xiaomi devices, including the POCO F3 and Redmi Note 10 Pro:

1. Open the Phone app and enter the combination: ##36446337###
2. From the engineering menu, select Hardware Testing → Audio → Flashlight Test.
3. Activate the Flash on Call option (if not, try LED Testing).
4. Save the settings and restart the phone.

⚠️ Warning: Do not change other options in the engineering menu without knowing their purpose.This can cause malfunctions in the camera or speakers.

For models with Qualcomm Snapdragon (e.g., POCO X4 Pro), the alternative code is:

##4636##

In the Testing menu, find the Flashlight section and enable Call Flash.

Setting the color and frequency of flashing

On smartphones Xiaomi with RGB-flash (e.g. Xiaomi) 11T Pro or Redmi K40 Gaming, you can adjust the color and the rhythm of the blinking:

1. Install Flash Alerts 2 from Google Play (free version with restrictions).
2. Grant permissions to Notices and Camera.
3. In the application settings, select: 🎨 Color: white, blue, red or green (depending on the flash pattern). ⏱️ Interval: 0.5 to 2 seconds between blinking. 🔄 Mode: Calls only, SMS or all notices.

On the POCO F4 GT and Black Shark 5, the flash syncs with game notifications – flashing green when incoming and red when battery power is low.

Solving the Problem: Why the Flash Doesn't Work

If the flash does not flash when you call after setting up, check these points:

• 🔋 Energy saving: Turn off Super Energy Saving mode in Settings → Battery - it blocks work LED.
• 📸 Camera Occupation: Close all applications that use the camera (Instagram, TikTok, Skype).
• 🔇 Do Not Disturb Mode: Enable an exception for calls to Settings → Don't disturb. → Allow interruptions.
• 🛠️ Firmware failure: Reset network settings through Settings → System system → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.

⚠️ Note: Xiaomi with MediaTek Helio chip (e.g. Redmi) 10C) The flash may not work due to conflict with the function AI Turn it off in the camera settings.

To diagnose hardware problems, enter the code in the engineering menu:

##232338##

In Flashlight Test, check the response of LEDs to commands. If the test fails, it is a hardware malfunction (repair required).

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If the flash flash flashes too dim, wipe its lens with an alcohol tampon - dust and fat reduce brightness by 30-40%.

Alternatives: Screen Blinking and Smart Lamps

If your model is not Xiaomi LED-flashes (e.g. Redmi) 9T), Use these visual warning methods:

• 📱 Blinking screen: Enable in Settings → Special facilities → Rumor → Blinking screen. It works on AMOLED-display.
• 💡 Smart lamps: Connect Xiaomi Mi LED Smart Bulb via Mi Home and set up automation: "When calling in" → flash".
• 🔊 External devices: Connect via Bluetooth Xiaomi Mi LED Desk Lamp – It supports call alerts.

For owners of the POCO X3 Pro and Redmi K30S, there is a unique feature called “Ambient Display 2.0” – the screen lights up when you call with animation that simulates a flash. Activates in Settings → Screen → Ambient Display → Alert Settings.

FAQ: Frequent flash questions on call

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On the POCO F5 Pro and Xiaomi 12T Pro, the flash synchronizes with the ringtone — flashing into the beat of the melody — a feature called Dynamic Flash that is enabled in the audio settings.