How to adjust the brightness of the flashlight on Xiaomi Redmi Note 8T: all ways

Xiaomi Redmi Note 8T is one of the most popular smartphones in the budget segment, which is still actively used due to the balanced characteristics and reliable firmware MIUI. However, many owners face a problem: the standard flashlight on the device is either too dim to illuminate dark rooms, or too bright, quickly discharged battery. In this article, we will analyze all the available ways to adjust the brightness of the flashlight – from standard functions to hidden firmware capabilities.

There are several ways to control the backlight intensity on the Redmi Note 8T, but not all of them are obvious. For example, in some versions of MIUI, the brightness adjustment of the flashlight is hidden in the engineering menu, and in others it is available through gestures or third-party applications. We tested each method on current firmware (including MIUI 12.5 and MIUI 14) and selected only working solutions. You will learn how to avoid overheating the LED and extend the battery life with frequent use of the flashlight.

Why can’t Redmi Note 8T adjust the flashlight brightness with standard tools?

Unlike Xiaomi’s flagship models (such as the Mi 11 or Redmi K50), where the flashlight’s brightness is controlled by a slider in the notification curtain, the Redmi Note 8T is devoid of this feature out of the box.

• 🔦 Single-stage LED: in the Redmi Note 8T A simple LED module with a fixed power (usually 500-600 mA) is installed. It does not support smooth adjustment as in dual-LED models (for example, Poco). X3 Pro).
• 📱 Optimization MIUI: Xiaomi budget devices often cut "unnecessary" functions to save processor resources.
• ⚡ Energy saving: firmware forcibly limits the maximum brightness of the flashlight to reduce the load on the battery (especially important for a battery with a capacity of 4000 mAh).

However, you can bypass these limitations, either by activating hidden settings through an engineering menu or by using third-party apps.

Method 1: Brightness adjustment through the engineering menu (without root)

The most reliable method is to activate the hidden option in the MIUI engineering menu, which does not require super-user rights (root) and works on most versions of the firmware.

Open the phone app and enter the code ##4636##

Go to the section "Equipment Testing"

Check that the "Flashlight" item is available for editing

Close all background applications for stable menu operation-->

Step-by-step:

1. Open the Phone app and enter the combination: ##36446337###
2. In the menu that appears, select Hardware Testing.
3. Scroll down to the Flashlight section (or Torch in some versions).
4. Slip on Flashlight Test – a window with a brightness slider will open (if it is not, then your firmware does not support this function).
5. Move the slider to the desired level (the recommended value is 70-80% for the balance of brightness and power consumption).
6. Press Save and reboot your smartphone.

Important: After the reboot, the flashlight brightness will reset to the factory settings, if you do not fix the changes through the command setprop persist.sys.flashlight.brightness X (where X is a value from 1 to 255) in the ADB. Read more about this in the section about ADB-team.

Method 2: Use of the ADB-brightness-fixing

If the engineering menu is not effective, you can apply ADB-This method requires you to connect your smartphone to your PC, but it allows you to save the flashlight brightness settings forever, even after you reboot:

• 🖥️ Computer with installed Xiaomi and ADB-tools drivers.
• 🔌 USB-cable (preferably original).
• ⚙️ Included debugging by USB (Settings → The phone. → Build Number – tap 7 times, then return to Settings → Additionally. → For developers → Debugging by USB).

Instructions:

1. Connect the Redmi Note 8T to your PC and confirm the debugging permission on your smartphone screen.
2. Open the command line (Windows) or terminal (macOS/Linux) in the adb folder.
3. Enter the command to check the connection: Adb devices must appear serial number of your device.
4. Set flashlight brightness (value 1 to 255): adb shell setprop persist.sys.flashlight.brightness 200
5. Reboot your smartphone: adb reboot

Once you restart, the flashlight will shine at a given brightness. To return the factory settings, use the command:

adb shell setprop persist.sys.flashlight.brightness 255

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If ADB-When you have a command that is not working, try to get temporary root permissions first through the Magisk app (you need to unlock the bootloader), which will allow you to change the system files responsible for managing the flashlight.

Method 3: Third-party applications for brightness control

If the previous methods seemed complicated, you can use third-party utilities, we tested 5 popular applications and selected the two most stable ones:

Recommendations for use:

• 📱 Before installing, check the reviews of Redmi Note users. 8T — Some apps may not support your model.
• ⚡ Turn off battery optimization for the selected application (Settings) → Annexes → Battery control, otherwise the flashlight will turn off after 5-10 minutes.
• 🔍 If the app requests permission to access the camera or microphone, refuse (this is not required for the flashlight to work).

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Third-party applications are the easiest way to do this, but they can conflict with MIUI system services. If the flashlight stopped working at all after installing it, uninstall the app and restart the smartphone.

Method 4: Gestures and fast commands for flashlight control

MIUI has hidden gestures that allow you to quickly turn on the flashlight without unlocking the screen, for example, you can set up a double press on the power button or draw the letter V on the screen off, which does not regulate brightness, but speeds up access to the flashlight.

How to set up:

1. Go to Settings → Screen Lock and Password → Launch gestures.
2. Select a flashlight and make a gesture (e.g., double pressing the volume button).
3. Activate the option Works on a locked screen.

You can also create a flashlight widget on the main screen:

1. Click the empty space on the desktop and select Widgets.
2. Find the flashlight widget (usually in the Tools section).
3. Drag it on the screen and adjust the size.

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If the flashlight widget is missing, install the Nova Launcher launcher - it has a built-in option to add a flashlight shortcut to the main screen.

How to avoid overheating and quick discharge of the battery?

Frequent use of a flashlight at maximum brightness leads to two problems:

1. Overheating of the LED - with prolonged operation (more than 5 minutes), the temperature of the module can exceed 60 ° C, which reduces its life.
2. Accelerated battery discharge – a flashlight at full power consumes up to 1-1.5 A, which is equivalent to 10-15% of the charge per hour.

Advice on safe use:

• ⏱️ Limit your running time: Do not keep your flashlight on for longer than 3-4 minutes in a row. Use a timer in third-party applications (for example, Flashlight). + LED).
• 🔋 Watch the temperature: if the case of the smartphone became hot - turn off the flashlight and let the device cool down.
• 📉 Lower the brightness: Even if you think the light is dim, in practice, 50-70% of the brightness is enough for most tasks.
• 🔄 Clean the flashlight connector: dust and dirt on the LED glass reduce the efficiency of lighting, causing you to increase the brightness.

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If the flashlight starts flashing or spontaneously shuts down, it is a sign of overheating.Let the smartphone cool down for 10-15 minutes, then check the module again.

⚠️ Attention: Redmi Note 8T firmware MIUI 12 with prolonged use of the flashlight, overheating protection may work, blocking the camera for 5-10 minutes. To avoid this, do not use the flashlight simultaneously with running applications (for example, a navigator or a game).

Frequent problems and their solutions

Redmi Note 8T users often encounter typical flashlight malfunctions, and consider the most common ways to fix them:

If none of these things worked, there might be a hardware problem.

1. Check the integrity of the LED with a magnifier - it should not be cracked or blackened.
2. Connect your smartphone to your PC and perform diagnostics through the Mi Flash Tool (instructions on the official Xiaomi website).
3. Contact the service center.The cost of replacing the flashlight module for the Redmi Note 8T — about 800-1500 ₽.

FAQ: Answers to popular questions