How to adjust the brightness of a flashlight on Xiaomi: the complete guide

Why Xiaomi flashlight brightness is important for users

The flashlight in Xiaomi smartphones has long ceased to be a simple support function. Today, it is a tool with flexible settings that can be useful in a variety of situations, from finding keys in a bag to emergency lighting on a hike. However, not all users know that the brightness of the flashlight on Redmi, POCO and Mi devices can be adjusted, and in some models even program automatic switching scenarios.

In this article, we’ll look at all the ways to adjust the flashlight on Xiaomi, from standard methods to hidden features available through the engineering menu, how to tailor lighting to your needs, save battery power and avoid common errors, and also explain why some models don’t adjust the brightness and what to do about it.

It’s important to understand that flashlight capabilities depend on the smartphone model and MIUI version. For example, flagship devices (such as the Xiaomi 13 Pro or POCO F5 Pro) support smooth brightness adjustment, whereas budget models (such as the Redmi 10A) can only offer fixed levels. But even then, there are workarounds — these too will be discussed.

Standard ways to adjust the brightness of a flashlight

Most modern Xiaomi smartphones allow you to change the brightness of the flashlight directly from the Quick Settings panel.

1. Open the notification bar by swiping your finger from top to bottom across the screen.
2. Find the flashlight icon (usually it looks like a pocket flashlight).
3. Hold your finger on the icon for 1-2 seconds - a slider will appear to adjust the brightness.
4. Move the slider left or right to reduce or increase brightness.

If you have a MIUI 12 or newer, you can adjust the brightness through Settings → Screen → Flashlight. There are additional options available, such as turning on the flashlight by double pressing the power button (on some models).

Note that on some devices (e.g. Redmi Note 11), the brightness slider only appears after the first long press on the flashlight icon. If you don't see it right away, try turning on the flashlight and then holding the icon.

Hidden flashlight functions: engineering menu and codes

For advanced users who want to get the most control over the flashlight, there is an engineering menu that allows you to fine-tune not only the brightness, but also other parameters, such as the time of automatic shutdown or the sensitivity of the light sensor.

To get into the engineering menu:

1. Open the Phone app.
2. Enter the combination: ##36446337##
3. Select the Hardware Testing option → Flashlight.

Here you will find advanced settings, including:

• 🔦 Max Brightness – Maximum flashlight brightness (measured in lumens or percentages).
• 🔋 Power Saving Mode – Power Saving Mode that automatically reduces brightness when battery power is low.
• ⏱️ Auto Off Timer – Auto-Switch-off timer (useful if you often forget to turn off your flashlight).
• 🌡️ Thermal Protection - protection against overheating (on some models, the flashlight dims at high body temperature).

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If the engineering menu does not open, check if it is blocked by antivirus or the function of Fraud Protection in the security settings.

On models with an infrared port (for example, Xiaomi Mi 10T Pro) in the engineering menu can display an additional parameter IR Flashlight - this is the brightness of infrared illumination used for night shooting.

Brightness adjustment through third-party applications

If standard methods don't work for you, you can use third-party apps, which are especially useful for older Xiaomi models, where there's no built-in brightness control.-3 tested:

Check reviews before installing, some apps may contain ads or request unnecessary permissions, and remember that root access may be required to fully control hardware functions (such as changing maximum brightness above factory limits).

Does not request access to contacts or SMS

Rating above 4.0 on Google Play

Updated in the last 6 months

No complaints about hidden advertising-->

If the flashlight doesn’t work after installing the app, check if Battery Optimization blocks it in the MIUI settings. Go to Settings → Apps → Permissions → Autostart and add the app to exceptions.

Why the flashlight is not regulated and how to fix it

Sometimes users are faced with the fact that the brightness of the flashlight does not change or the adjustment slider is simply absent.

1. Obsolete version of MIUI - on firmware older than MIUI 11 smooth brightness adjustment may not be supported.
2. Hardware limitations – Budget models (such as the Redmi 9A or POCO C31) often have only 2-3 fixed brightness levels.
3. System failure – sometimes helps reset flashlight settings through an engineering menu or smartphone reboot.
4. Damage. LED-Module – if the flashlight is dim even at maximum brightness, repairs may be required.

If the problem is firmware, try updating MIUI to the latest version. Go to Settings → About Phone → System Update. If there are no updates, you can manually flash the latest version through Recovery or Fastboot (the instructions are on the official Xiaomi forum).

On some models (for example, Xiaomi Mi A3 with pure Android), the brightness adjustment of the flashlight may not be possible due to the features of the firmware, in which case installing a custom TWRP and firmware of a modified core (for example, ElementalX), but this requires experience and may be unwarranted.

Energy saving: how to reduce battery consumption when using a flashlight

A flashlight is one of the most voracious components of a smartphone, and at maximum brightness, it can discharge a battery by 10-15% in an hour of continuous operation.

• 🔋 Use the minimum required brightness – often enough 30-50% high-pitch.
• ⏱️ Set up an automatic shutdown timer (available in the engineering menu or third-party apps).
• 🌙️ Turn on night mode in flashlight apps – it reduces brightness and adds a warm hue, less irritating to the eyes.
• 🔄 Avoid frequent switches on/off – each flashlight launch consumes additional energy to initialize the module.

On devices with AMOLED-screens (e.g. Xiaomi) 12T or POCO F4) You can save the battery by using the screen light instead of the LED-A flashlight:

1. Install the Flashlight Screen app.
2. Select the White Screen mode (white screen).
3. Adjust the brightness of the screen – it will be lower than that of LED, but battery consumption will be reduced by 2-3 times.

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On smartphones with a battery capacity of less than 4000 mAh (for example, Xiaomi 11 Lite), a flashlight at maximum brightness can discharge the device in 3-4 hours of continuous operation.

If you use a flashlight frequently on a hike or in emergency situations, consider buying a powerbank with wireless charging. Xiaomi models (such as Mi Power Bank 3 Pro) support fast charging and can extend the flashlight’s life by several times.

Advanced scenarios: flashlight automation

Using applications like Tasker or MacroDroid, you can program the flashlight to do things automatically.

• 🚶 Turn on when shaking your phone (useful if hands are busy).
• 🏠 Automatic shutdown after 5 minutes (to avoid battery drainage).
• 📱 Decrease in brightness at night (according to the light sensor).
• 🚨 Flashing a flashlight when an incoming call (for deaf users or in noisy places).

To set up automation in Tasker:

1. Create a new task (Task → New Task).
2. Add the action Display → Flashlight.
3. Set: On, Level: 50% (or other brightness level).
4. Set up a trigger (e.g. Event → Sensor → Shake).

On devices with MIUI 13+, some of these features are available without third-party apps through Settings → Special Features → Gestures. For example, you can set the flashlight to turn on with a triple tap on the screen.

If you use a flashlight for a photo (for example, as a backlight for macro photography), look for the Manual Camera app, which allows you to synchronize the work of the flashlight and the camera, adjusting the brightness and color temperature of the backlight.

Frequent Mistakes and How to Avoid Them

When working with a flashlight on Xiaomi, users often make mistakes that lead to a quick battery drain or even a module breakage.

⚠️ Warning: Do not use a flashlight at maximum brightness for more than 10 minutes in a row - this can cause overheating LED-On devices without thermal protection (e.g. Redmi) 8A) risk particularly high.

• 🔥 Overheating – if the smartphone case becomes hot, turn off the flashlight immediately and let the device cool down.
• 💧 Getting moisture in – even if your Xiaomi has protection IP53, Do not point your flashlight in the rain or in the bathroom – contact LED oxidize.
• 🔋 Zero discharge – if the battery is discharged to 0% with the flashlight on, it can damage the power controller.
• 🛠️ Self-repairing – an attempt to replace LED-module without experience often ends in damage to the plume.

If the flashlight starts to flash or shine dimly for no apparent reason, try the following:

1. Reboot your smartphone.
2. Clear the Settings app cache (Settings → Applications → Application Management → Settings → Clear the cache).
3. Check if the flashlight is blocked by the Power Saving Mode.

⚠️ Note: On some Xiaomi models (e.g, POCO X3 Pro) when Game Mode is activated, the flashlight automatically turns off to save resources. To avoid this, add the flashlight app to the mode exceptions.

If nothing helps, go to the service center. LED-Xiaomi’s official devices cost between 1,500 and 3,000 rubles (depending on the model), informal workshops may offer cheaper replacements, but the risk of installing a defective module is higher.

FAQ: Answers to Frequent Questions