The light indicator on Xiaomi Redmi 9 is a small but extremely useful element that signals missed calls, messages and other notifications. However, many users face problems: some can not find the LED settings in MIUI, others the indicator flashes not as they would like, and some even want to turn it off. In this article, we will analyze all the nuances from the basic settings to hidden functions that Xiaomi does not advertise.
It's important to understand that Redmi 9 (M2003J15SC, M2003J15SS, etc.) is equipped with a single-color white LED, unlike flagship RGB-backlit devices, which imposes restrictions on customization, but even in these conditions there are ways to make the indicator more informative. We tested all methods on the latest versions of MIUI 14 and Android 12, so the instructions are relevant for 2026.
Where is the light indicator on Redmi 9 and how does it work?
On the Xiaomi Redmi 9, the LED is located at the top of the screen, to the right of the front camera. It lights up when:
- 📞 Missed calls (blinks green/white depending on firmware)
- 💬 Unread. SMS or messages in messengers (WhatsApp, Telegram)
- ⚠️ Low battery charge (red if maintained)
- 🔄 Charging process (constant white light)
By default, the indicator is activated, but its behavior depends on the version of MIUI. For example, in MIUI 13 and later, the LED may not respond to notifications from third-party applications without additional settings. It is also worth considering that when the Do Not Disturb or Save Charge mode is turned on, the indicator may not work.
Technical feature: Redmi 9 LED does not physically support multicolor backlight, despite the fact that some firmware has options for choosing colors. This is due to hardware limitations - a single color LED is installed with the ability to only change the intensity of the glow.
Basic setting of the light indicator through the MIUI menu
To set the indicator with standard tools, follow the following steps:
- Open Settings → Notifications and Status bar.
- Select Light Indicator (in some versions of MIUI, it may be called Notification Indicator).
- Activate the slider Enable the light indicator.
- Set up the parameters: 🔄 Blinking when charging – turning on/off the backlight during charging 📱 Blinking at Notifications – Response to Messages and Calls ⏱️ Blinking duration – the choice of interval (short/long)
If the item Light indicator in the menu is not, it can mean:
- 📱 You have custom firmware installed without LED support
- 🔧 In the developer settings, the option to Show the light indicator is disabled
- 🛠️ Hardware malfunction (check at the service center)
☑️ Checking the performance of the indicator
⚠️ Note: Some Redmi 9 versions (e.g. Redmi) 9A or Redmi 9C) There's no light indicator physically. Clarify the model in the settings along the Settings path. → The phone. → Model.
Advanced settings through "Developer settings"
To more flexible setup of the indicator, you will need to activate the developer mode:
- Go to Settings. → The phone.
- Click on MIUI Version 7 times until the notification “You are a developer!” appears.
- Return to the main settings menu and open Additional → Developer settings.
- Find the option Light indicator (can be called Notification light in English firmware).
Additional parameters are available here:
| Parameter | Description | Recommended value |
|---|---|---|
| Insert when notified | Activates flashing at any notifications, including system | On. |
| Color of indicator | Color selection (not available on all Redmi 9 models) | White (default) |
| Blinking speed | Frequency adjustment (slow/fast) | Medium |
| Show with the screen off | Blinking only when the display is out | On. |
On Redmi 9 models with MIUI 12.5 firmware and below, the developer menu may not have a light section, in which case you will need to use third-party applications or edit system files (see next section).
Third-party applications for indicator customization
If standard settings are not enough, you can use the apps from Google Play:
- 🔧 Light Manager – allows you to assign different colors to different applications (does not work on all Xiaomi devices)
- 📱 LED Blinker Notifications – Advanced blinking control, including interval settings
- ⚡ Always On AMOLED — alternative AMOLED-Screens (not suitable for Redmi 9 with a IPS)
To work these applications will need to provide permissions:
- Enable access to Notifications for the selected application in Settings → Apps → Permissions.
- Activate the option to “Show over other windows”.
- In some cases, root access is required (not recommended for beginners).
⚠️ Note: LED control applications may conflict with system processes MIUI, Check user reviews with your Redmi 9 before installing.
💡
If the indicator stopped working after the MIUI update, try resetting the Notifications app settings to Settings → Apps → All Apps → Notifications → Storage → Clear the data.
Solving problems with the light indicator
If the indicator is not working or flashing correctly, check the following points:
| Problem. | Possible cause | Decision |
|---|---|---|
| The indicator does not burn at notifications | Disabled in settings or conflict with the application | Check notification settings for a specific messenger |
| Always burning white. | Activated mode "Do not disturb" with exceptions | Turn off the mode or set exceptions |
| Flashes red when charging. | Low battery charge level | Connect the charger with current ≥2A |
| The indicator does not respond to SMS | Notifications for the Messages app are disabled | Enable notifications in the app settings |
To diagnose hardware problems:
- Run the test equipment through code ##4636## (test menu).
- Select the LED indicator and check the response to commands.
- If the test does not pass, contact the service center - a malfunction of the plume or the LED itself is possible.
What to do if the indicator is on fire and does not go out?
How to completely turn off the light indicator
If the LED is irritating, it can be deactivated:
- Go to Settings → Notifications and Status bar → Light indicator.
- Turn off the slider Turn on the light indicator.
- For complete shutdown (including charging) use ADB-Adb shell settings put global notification_light_pulse 0
After completion ADB-The indicator will stop responding to any events, including charging. To return the standard behavior, use the:
adb shell settings put global notification_light_pulse 1⚠️ Note: Disabling the indicator through ADB It may be reset after the update. MIUI. In this case, the command will have to be re-executed.
💡
On Redmi 9 there is no hardware ability to change the color of the indicator – all color settings in the firmware are simulated software and do not actually affect the physical LED.
Hidden MIUI chips for light indicator
Xiaomi hides a few useful features that can be activated through system settings or third-party utilities:
- 🔄 Blinking at alarm clock: the indicator will signal the alarm even if the screen is turned off. → Alarm clock → Additionally. → Light indicator.
- 📴 Indicator Only mode: Turns off vibration and notification sound, leaving only light indication. Configured to Settings → Sounds and vibrations → Notification regimes.
- 🔋 Charge level indication: when charging, the LED flashes at different frequencies depending on the percentage of charge (for example, 1 time in 5 seconds at 20%, constantly at 100%).
To activate hidden functions, you may need to:
- Install a patch through Magisk (requires root).
- Use the Xposed Framework with MIUI Lighting.
- Manual file editing /system/build.prop (power users only).
Warning: Any manipulation of system files can lead to device break. Before experimenting, back up through Settings → Additional → Backup and Reset.