The light indicator on Xiaomi Redmi 9C is a small but useful element that helps not to miss important notifications. However, many users are faced with the fact that it does not work out of the box or turns off after the MIUI update. In this article, we will analyze why this happens and how to properly activate the LED for alerts for calls, messages and other events.
It’s important to understand that Redmi 9C is a budget smartphone, and in some regional versions of the firmware, the light indicator function can be hidden or deactivated by default. We’ll look at all the available ways, from standard settings to hidden developer settings.
If you've tried to turn on the indicator through the notification menu and it didn't work out, don't be too upset. It might be MIUI 12/13 or conflicting with energy saving modes.
Why the light indicator does not work on the Redmi 9C
Before we move on to settings, let’s look at the main reasons why the LED may not function:
- 🔹 Lack of support in firmware: in some regional versions MIUI (For example, for India or Europe, the function is disabled at the software level.
- 🔹 Energy saving mode: aggressive battery optimization can block the indicator.
- 🔹 Topics conflict: Third-party themes from the Mi Theme Store sometimes reset notification settings.
- 🔹 Hardware malfunction: in rare cases, the LED can be damaged (usually this is noticeable by the lack of charging of the indicator).
It is also important to note that Redmi 9C It uses a single LED for all types of notifications (unlike the flagship models with the LED). RGB-This means that the color of the indicator will be the same for calls, messages and other alerts - you can only distinguish them by the frequency of flashing.
Method 1: Standard Notification settings in MIUI
The easiest way is to activate the indicator through the notification menu.
- Open Settings → Notifications and Status bar.
- Go to Application Notifications.
- Select the application (such as Messages or Calls).
- Activate the Light indicator switch (if available).
If the Light indicator is not on the list, it means that your version of MIUI has a hidden function, in which case move on to the next method.
Check the version of MIUI in Settings → About the phone
Turn off the power saving mode
Make sure your phone is not in "Do Not Disturb" mode.
Update the firmware to the latest version-->
Method 2: Including through hidden developer settings
If the standard method doesn’t work, try activating the indicator through the developer mode, which works on most versions of MIUI 12/13.
- Activate Developer Mode: Go to Settings → About Phone. Click 7 times on the MIUI Version until you become a developer!
Settings
Additional settings → Developer settings
Light indicator
Notification light
In some firmware, this item may be called Pulse notification light – turn it on and set the color (usually only white or blue is available).
What to do if there is no “Light indicator” in the developer settings?
Method 3: Using third-party applications (without root)
If the system settings are not working, you can try Google Play apps that emulate the operation of a light indicator.
- 📱 Light Manager – LED Settings: allows you to adjust the color and frequency of blinking for each application.
- 📱 Always On AMOLED: alternative AMOLED-screens (although Redmi is a 9C has IPS, The application can work in the mode of "economic" display).
- 📱 Notification Light: Simple tool to control the indicator, but can conflict with the MIUI.
Check reviews before installing, some apps may not work properly on the Redmi 9C due to manufacturer restrictions, and note that third-party utilities increase battery consumption by 5-10%.
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If the indicator only lights up when charging but does not respond to notifications, try turning off the Adaptive Battery feature in the power settings.
Table: Comparison of methods for inclusion of indicator
| Method | Root is required. | Difficulty | Efficiency | Risks. |
|---|---|---|---|---|
| Standard settings of MIUI | ❌ No. | ⭐⭐ (simple) | ⚠️ 50% (not working on all firmware) | Absent. |
| Developer mode | ❌ No. | ⭐⭐⭐ (middle-of-the-road) | ✅ 70% | Settings may be reset after the update |
| Third-party annexes | ❌ No, but permissions are required) | ⭐⭐ (simple) | ⚠️ 60% (depending on the application) | Increased battery consumption |
| Resetting settings | ❌ No. | ⭐⭐⭐⭐ (difficult) | ✅ 80% | Data loss in total reset |
What to do if nothing helps: hardware checks
If the software methods didn't work, maybe the problem is the hardware.
- Check the indicator when charging: Connect your phone to the charger. If the LED does not light up, this may indicate a malfunction of the LED or plume.
- Test mode: Dial on the keyboard ##4636##. Select Equipment Test → Light indicator. If the test fails, contact the service center.
⚠️ Warning: If the phone was in a wet environment or fell, there is a high probability of oxidation of LED contacts. In this case, self-repair is not recommended - professional diagnosis is required.
Frequent Mistakes and How to Avoid Them
Many users make common mistakes when setting up the indicator.
- 🚫 Use unofficial firmware: custom versions MIUI frequently breaks down the LED.
- 🚫 Disable system applications: Deleting MiuiSystemUI or NotificationCenter will cause notifications to fail.
- 🚫 Reset settings without backup: save data via Settings before resetting → Additionally. → Backup.
Also avoid installing apps to control the indicator from unverified sources – they may contain malicious code or conflict with MIUI.
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If the indicator worked before, but stopped after the update, try to roll back to the previous version of MIUI via Fastboot.