Smartphone owners often face the need to quickly assess the condition of a device without unlocking the screen. The light indicator on the gadget body serves precisely this purpose, signaling missed calls, messages or charging process. However, in the shell of MIUI and the new HyperOS, the control of this element can be hidden or work in an obscure manner, which raises questions among users.
Customizing the behavior of the LED allows you to personalize the device to your needs. You can choose a color for different applications or completely disable the blinking if it interferes with you at night. It is important to understand that the control methods depend on the specific model of your Xiaomi, Redmi or POCO, as well as the version of the operating system installed.
In this article, we will take a closer look at all the configuration options available, including standard menus and hidden engineering settings, and we will also look at why the indicator may not burn even when settings are turned on, and how to fix common software failures.
Main purpose and types of indication
Before you start making changes to the menu, you need to understand the logic of this component. LED module (LED) is an energy-efficient way of alerting, which consumes minimal amount of energy compared to constantly turning on the screen. Manufacturers use different color schemes to encode information.
Usually green signals a fully charged battery or successful completion of the process. red most often indicates a low battery level or a critical system error. flashing blue or white is usually reserved for notifications from instant messengers and social media.
⚠️ Note: Some of the Redmi budget models and POCO There is no multicolor LED, and these devices can be equipped with a monochrome diode or use a software simulation through the screen (Always On Display), which cannot be configured as a classic. LED.
Understanding the color scheme helps you navigate the status of the device more quickly. For example, a slowly flashing red indicator while connecting to the network can mean that the battery is deeply discharged and takes time to accumulate a minimum charge before turning on.
Standard configuration through the system menu
Most current versions of the MIUI shell have standardized the path to controlling light signals. To access the basic parameters, you will need to go to Settings, then select Lock Screen or Additional Settings, depending on the firmware version.
Here you'll find the Light Indication switch, which activates the basic mode in which the phone responds to incoming events, but the details of settings often require additional actions, as the system by default hides the extended menus to simplify the interface.
If the standard switch is not visible in the menu, it may mean that your version of the software restricts access to this feature, in which case it is worth checking for system updates or using alternative activation methods, which will be discussed below.
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If you do not find the item "Lighting indication" in the main settings, use the search by settings, typing the request "Indicator" or "LED".
Extended configuration via engineering menu
Deeper customization, including the choice of colors for specific applications, often requires access to engineering menus or special codes, a method that allows you to manage the hardware parameters of the LED more flexibly than a standard user interface allows.
One way to access this is to use the code ##6484## in the Phone app, and then you enter the CIT test menu, and you can find the section that you're looking for that LED or Indicator Test.
Another method involves activating hidden menus through the Engineering Mode app, which can be found in the app directory or downloaded from trusted sources if removed by the manufacturer. In the Hardware Testing → LED section, you can diagnose and manually adjust colors.
Is the engineering menu dangerous?
It is worth noting that on global firmware versions, access to these features may be limited, and users often resort to installing specialized controller applications that gain control over LEDs through system APIs.
Use of third-party applications for management
When built-in tools aren't enough, Google Play Market apps come to the rescue, with the leaders in this niche being programs like Light Flow, NotifyBuddy, or LED Blinker Notifications, which allow you to create complex notification profiles.
With these utilities, you can customize unique color schemes for every contact in your phone book or for every messenger you install, for example, messages from an important customer can make the indicator flash purple and from friends can make it flash green.
- 🎨 Flexibility: The ability to customize over 16 million colors and different blinking modes.
- 🔔 Customization: Create profiles for quiet hours or meetings when the indicator should only burn for emergency calls.
- ⚡ Savings: Some applications can optimize diode performance by extending battery life.
When installing such applications, the system will request a number of permissions, including access to notifications and special features, which is necessary so that the program can intercept events and control the LED instead of the standard system.
⚠️ Attention: Installing applications with deep access to the system can lead to increased battery consumption in the background.
Indication of charging and battery status
The behavior of the indicator during the charger connection deserves special attention, and this is an important diagnostic tool, and if you plug in a cable but the indicator does not catch fire, this may indicate a fault in the cable, power supply or connector.
In normal operation, when the phone is turned off, the red light is constantly on, the indicando charging process. When the battery reaches 100%, the color changes to green. If the phone is on, the logic may differ: often the indicator goes out after reaching full charge, so as not to interfere with the user.
☑️ Diagnostics of charging problems
There is also a “Aimation on Charging” mode that can be available on some models with a AMOLED-In this case, instead of an LED diode, a portion of the pixels around the camera or around the circuit of the screen will light up, simulating the operation of the device. LED.
Table of color signals and their meaning
To quickly understand the status of your device, the following table will help decipher the signals given by your smartphone in various situations.
| Color of indicator | Blinking mode | Meaning |
|---|---|---|
| Red. | Permanent. | Charging process (when the phone is turned off) |
| Red. | Blinking | Critically low battery charge (< 10%) |
| Green. | Permanent. | Battery fully charged. |
| Blue/White | Blinking | Incoming notification (SMS, call, application) |
| Orange | Permanent. | Fast charging mode (on some models) |
It is worth considering that the color gamut can vary depending on the matrix manufacturer and the specific device model. For example, on some Redmi Notes, blue can be replaced by white to indicate notifications.
The solution: why the indicator does not work
It's quite common for an indicator to stop responding to events, most often the problem is a software failure or a Do Not Disturb mode activated, and check if this mode is on because it blocks the light signals.
Another reason is the error in the work of a particular application. If the indicator does not flash when receiving messages from WhatsApp, try reinstall the application or clear its cache, and it is also worth checking the settings of the applications themselves: messengers have their own points "Lighting indication" that should be active.
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If the indicator does not work in any application, perform a full reset of the phone settings or check the device in the service center for hardware breakdown.
In rare cases, you need to reset your settings through a recavator or flash the device. However, before drastic measures, it is recommended to simply restart the smartphone or wait until the battery is completely discharged and recharged, this often calibrates the power controller.