The flashlight on Xiaomi smartphones is one of the most sought-after features that can suddenly stop working.You click on the icon in the notification curtain and the LED doesn't respond - or switch on for a second and go out. 80% In cases, the problem is solved without visiting the service center, but for this you need to correctly diagnose the cause. 12, POCO X5, Mi 11 other models 2020-2026 year-end.
We analyzed user reviews on forums 4PDA And Mi Community, service center data, and Xiaomi technical documentation, found that 65 percent of the time, the software was to blame (failures). MIUI, Application conflicts, 25% hardware failures (LED damage, contacts), and only 10% mechanical damage after falls. Below you will find step-by-step instructions for each situation, including hidden settings and commands for the engineering menu.
If your smartphone hits or falls from a height of more than 1 meter, check other functions (camera, speakers, sensors) first, in which cases the flashlight problem is often just the tip of the iceberg - and a comprehensive diagnosis is required.
1. Software glitches: why MIUI locks up
The most common cause is malfunction of the shell MIUI. After the updates (especially on the MIUI 14/15) Many users complain that the flashlight stops responding to presses or works with a delay, the reason for this is the optimization of energy consumption, which sometimes βforgetβ about the LED.
The first thing to do is:
- π Reboot your phone. 30 percent of the time, it solves the problem β MIUI Resets temporary locks on hardware modules.
- π± Check the Settings. β Annexes β Application management β Lantern: Make sure the app has permissions to use the camera and flashlight (yes, these are separate permissions!).
- π« Turn off energy saving modes: Settings β Battery β Power saving mode. MIUI Limits the operation of the LED in order to save money.
If the flashlight still doesnβt work, try resetting the notification curtain settings:
- Open Settings β Notifications and Status bar.
- Slip on the Control Panel (or "Quick Settings").
- Find the flashlight icon, pinch it and drag it to the basket (remove).
- Restart the phone β the icon will appear again, but with clean settings.
2. Application conflicts: who "steals" control of the flashlight
Many applications (especially those that work with the camera or AR) For example, TikTok, Snapchat or Google Camera sometimes forget to release a resource after use, and as a result, the system thinks that the flashlight is busy and does not respond to your commands.
How to check:
- π₯ Close all apps that may have used a camera/flashlight (even those that work in the background!).
- π Check the active processes: Settings β Annexes β Application management β Look at the camera access programs.
- π Forced stop suspicious apps (e.g. Mi Home, if you have Xiaomi Smart Home devices β they sometimes conflict with LEDs).
Especially often, the problem occurs after installing custom firmware or modified versions of Google Camera, and if you recently installed something like this, try rolling back to stock firmware.
π‘
If the flashlight only turns on in some applications (for example, in the camera), but does not work from the curtain - the problem is exactly the access rights conflict. β Confidentiality β Permits
3. Hardware malfunctions: when the LED itself is to blame
If the software methods didn't work, it's time to check the hardware. In Xiaomi, the flashlight is usually a separate LED module located next to the main camera.
| Reason. | Signs. | Decision |
|---|---|---|
| Burnt LED | The flashlight doesn't shine at all, but the icon in the curtain is pressed | Replacement of module in the service (~1500-3000β½) |
| Oxidation of contacts | The flashlight flashes or is not working smoothly | Cleaning with alcohol (if you know electronics) or service |
| Damage to the plume | The flashlight only works in a certain position of the phone. | Diagnostics in the service, it is possible to replace the plume |
| Factory marriage | The problem occurred in the first few months of use. | Warranty repair (if the phone is warranty) |
Check hardware fault can be done using the equipment test:
- Type ##4636## (this is an engineering menu) on the keyboard.
- Choose Testing β Single Test β Flashlight.
- If the test shows an error, the problem is precisely in the hardware.
What does the LED module look like inside Xiaomi
4. Failures after the update: how to roll back changes
Updates MIUI Android and Android often break the flashlight, especially when it comes to transitions between major versions (e.g., with the use of a flashlight). MIUI 13 on MIUI 14) If the problem occurs immediately after the update, here's what to do:
Option 1: Reverse the update (if available)
- π₯ Go to Settings. β The phone. β Updating the system.
- π Click on the three dots in the top right corner and select Reverse Update (if the option is active).
- β οΈ Warning: Recoil is only possible within 10 days of the update, after which the system removes the old firmware.
Option 2: Resetting settings
If the rollback is not possible, try resetting to factory settings:
Make a backup copy of the data (photos, contacts, messages)
Remember the username/password from your Mi Account (required to unlock)
Connect your phone to charge (the battery should be) >50%)
Write it out. IMEI (in case of network problems after resetting)-->
For discharge:
- Open Settings β About the phone β Reset settings.
- Select Reset all settings (not to be confused with Reset Network Settings!).
- Confirm the action and wait for the reboot.
After the flashlight is reset, it should work, and if it doesn't, it's not the software part that's the problem.
5. Influence of custom firmware and root rights
If you have installed custom firmware (e.g. Pixel Experience, LineageOS) or obtained root access, the flashlight may not work because of:
- π§ Incorrectly prescribed permissions for /sys/class/leds/flashlight.
- π The missing drivers for the LED in the firmware.
- π Blocking by Magisk or other modules.
How to fix it:
- Check if the flashlight works in the drain recovery: 1. Turn off the phone. 2. Hold it. <power-button> + <volume-button>. 3. In the recovery menu, select Advanced β Enter Fastboot. 4. Connect your phone to your PC and check the flashlight through ADB: adb shell echo 1 > /sys/class/leds/flashlight/brightness If the LED lights up - the problem is firmware.
- Install a Magisk module to control the LED (e.g. Flashlight Enabler).
- You can use the phone to the stock. MIUI via Mi Flash Tool.
π‘
If you use custom firmware, check developer forums (such as XDA-Developers) first β there may already be a flashlight patch for your model.
Mechanical damage: water, falls, repairs
If your Xiaomi fell, got wet or got repaired, the flashlight could have been physically damaged.
Moisture intrusion
Even if the phone hasn't sunk, condensation or high humidity can cause LED contacts to corrosion.
- π§ The flashlight flashes or shines dimly.
- π The phone discharges quickly (moisture can close the chains).
- π± At the bottom of the screen appear "divorces" (damage to the plume).
Consequences of falls
An impact can dislodge an LED module or damage its mounting, often accompanied by:
- πΈ Camera autofocus problems (modules are located nearby).
- π Crunch when pressing on top of the phone.
- π¦ Visible cracks near the camera lens.
In such cases, self-repair is not recommended - it is better to contact the service.The average cost of replacing the flashlight module in Xiaomi:
- π° Redmi Note 10/11: 1200-1800β½
- π° POCO X3/X4: 1500-2200β½
- π° Mi 11/12: 2000-3500β½ (due to the complexity of disassembly)
π‘
If the flashlight is working after falling, but it is shining away (not directly), the LED lens is likely to have shifted, and you can fix it in the service without completely replacing the module.
7. Hidden settings and engineering menu
Xiaomi has hidden commands that allow you to test a flashlight bypassing standard restrictions MIUI. These methods are suitable for advanced users.
Method 1: Direct control through ADB
If you have a debugging bridge ADB, You can manually turn on the flashlight:
- Connect your phone to your PC and enable debugging. USB In Settings β The phone. β Version. MIUI (Tap 7 times according to version, then return to Additional settings β For developers).
- Enter the command line: adb shell su echo 255 > /sys/class/leds/flashlight/brightness (255 β maximum brightness, 0 β shutdown)
Method 2: Test menu (CIT)
Enter in the dialer phone number:
- ##248## is a test of LED (on some models).
- ##4636## β Testing β Single Test β Flashlight.
Method 3: Manual Enablement Through File System
If you have root, you can manually check the control files:
- Open a file manager with root access (such as Root Explorer).
- Move to the /sys/class/leds/flashlight/.
- Check the permissions to the brightness file (must be rw-rw-r)--).
π‘
If teams ADB They don't work, maybe your firmware has disabled core-level LED support. MIUI.
8.When to contact the service: checklist before the visit
If you've tried all the methods, but the flashlight still doesn't work, you should go to the service center.
Make sure the problem is not in the software part (check on another firmware)
Make a backup copy of the data (in case of a complete reset)
Write it down. IMEI (in case of replacement of motherboard)
Check if you have a guarantee (check in Settings). β The phone. β Status of guarantee)
Take a picture of the malfunction (e.g. video of the flashlight flashing)-->
What to ask the master:
- π§ "Can you check the LED power circuit with a multimeter? (this is free and will show if the voltage goes to the module).
- π‘ "Is there an original flashlight module for my model? (sometimes unoriginal parts are put in place that quickly fail).
- π "Do you have a warranty for repairs? (standard β 3-6 months).
Average repair prices in official Xiaomi services (2026):
| Service | Cost (β½) | Date(s) |
|---|---|---|
| Diagnostics | 0 (free) | 0.5-1 |
| Replacement of flashlight module | 1500-3000 | 1-2 |
| Repair of the plume | 2000-4000 | 2-3 |
| Cleaning for oxidation | 1000-2000 | 1 |
β οΈ Warning: If you are offered to replace the entire motherboard because of a broken flashlight, it is a fraud!