Turn on flash when calling Xiaomi Redmi 9C: 3 proven ways + error solving

Are you missing important calls because you can't hear them in a noisy room?The camera flash feature on an incoming call on the Xiaomi Redmi 9C can be your lifesaver.This option turns backlight into a visual signal that you can't miss - even if the phone is lying down screen or in silent mode.

Unlike flagship models, where this feature is often activated by default, on the budget Redmi 9C it has to be turned on manually.Moreover, depending on the version of the MIUI firmware, the path to settings may differ, and sometimes the option is completely hidden. In this article, we will discuss all working ways to activate flash on calls, including alternative methods for cases when standard settings do not work.

Important: The function uses LED-It's a flash camera, so when you use it, it can drain the battery a little bit faster. 1-2% One hour in standby mode with option enabled.

Why is Redmi 9C not flashing in call settings?

Many users find that the Settings → Sounds and Vibrations menu simply does not have the option “Flash on a Call” for several reasons:

• 📱 Version. MIUI below 12.0.3 – In early firmware, the feature was only available on flagship models
• 🔄 Regional restrictions – on some firmware versions for India/Chinese option disabled by default
• 🛠️ Custom firmware – informal builds often remove “unnecessary” features to optimize
• 🔋 Energy savings – in ultra-low consumption mode, the system can block access to the system LED

If your Redmi 9C runs on MIUI 12.5 or later, but you still don’t have the option, don’t despair. In the following sections, we’ll show you how to get around this limitation with hidden settings and third-party apps.

Method 1: Standard activation via settings (MIUI 12.5 and later)

This is the simplest method that works on most devices with current firmware.

1. Open the Settings app (cog icon on the home screen)
2. Go to the section Sound and vibration
3. Scroll down to the "Flash at Notifications" block.
4. Activate the flash switch when calling
5. In additional settings, select: 🔄 Mode of work: "Only when silent" or "Always" 🔦 Intensity: 1 to 3 (recommended 2 for balance of visibility and economy)

An important nuance: if you have a two-sim, you can configure different flash parameters for each SIM-To do this, select Settings in the call settings. SIM-map → Outbreak.

Make sure the battery is more than 20 times charged%|Turn off the power saving mode|Check that LED-The flash is working (take a test photo)|Update the firmware to the latest version-->

Method 2: Hidden engineering settings (for older versions of MIUI)

If your firmware does not have a standard menu item, you can try activating the function through the engineering menu.This method works on MIUI 11-12.0.2, but you need to be careful:

1. Open the phone application
2. Enter the combination: ##36446337## (code for sensor test)
3. In the menu that opens, select LED Test.
4. Press Flash LED Test and wait for flash flash to flash
5. Go back to the main test menu and select Single Item Test → Flashlight
6. Activate the Flash on Call option (if available)

⚠️ Warning: Do not change other parameters in the engineering menu unless you understand their purpose.

If the code doesn’t work, try an alternative:

Settings → About Phone → MIUI version (click 7 times)


Settings → Additional → Special features → Flash notifications

Method 3: Third-party applications for flash control

When standard methods don't work, we use specialized tools to help, and we tested 5 popular applications and selected the two most reliable ones:

Instructions for setting up Flash Alerts 2:

1. Install the app from Google Play
2. Provide all the permissions requested (notifications, camera)
3. In the main menu, activate Flash on Call.
4. In the Customize section, set up: 🔹 Flash color (white/blue/red) 🔹 Frequency of blinking (recommended) 1-2 Hz) 🔹 Exceptions for specific contacts

⚠️ Attention: Some apps may conflict with Xiaomi system utilities. If lags appear after installation, clear the Settings app cache → Annexes → Flash Alerts → Warehouse → Clear the cache.

💡

If the flash doesn't work when calling, check if you've added the caller to the blacklist. In MIUI, blacklisted calls don't activate visual notifications.

Solving the problem: the outbreak is not working

Even after you set it up properly, it may not work, and we've collected the most common causes and ways to fix them for the Redmi 9C:

If none of the methods worked, check the performance of the flash itself:

1. Open the Camera app
2. Switch to photo mode
3. Activate the flash (lightning icon)
4. Take a test shot.

For users with MIUI 13/14, the Smart Notifications feature is available, which allows you to create complex scenarios, for example, you can configure:

IF (incoming call from Mom) TO (flare red + vibration Heartbeat)

To activate this mode:

1. Go to Settings → Special features → Smart notifications
2. Choose Create a Rule → Call
3. Set up conditions (specific contact, time of day, etc.)
4. In the Actions section, add Flash and Vibration.

Comparison with other Xiaomi models: which is better?

The flash function is implemented differently in different Xiaomi lines, and for clarity we have prepared a comparative table:

The Redmi 9C loses to flagships in flexibility of settings, but benefits in energy efficiency. For example, on the Mi 11 Lite, when using the flash actively, battery consumption can reach 5% per hour, while on the Redmi 9C this figure is 2-3 times lower due to the optimization of the budget processor Helio G35.

Fun fact: on some models (like the Redmi Note 9S), flash function automatically turns off when you connect your headphones. On the Redmi 9C, there is no such restriction - you can use both functions simultaneously.

💡

On the Redmi 9C, the flash function works even when the screen is off – unlike many Samsung models that require the display on.

FAQ: Frequent questions about setting up flash on Redmi 9C