Owners of Xiaomi smartphones and the Poco sub-brand often face a situation where a camera flash spontaneously lights up even when the device is locked. This is especially relevant for the Poco X3 Pro model, where the hardware button to turn on and adjust the interface can lead to unexpected results.
The reason lies in the convenient fast access function, which is activated by default in the shell of MIUI or HyperOS. The system allows you to start the camera or flashlight with a double press on the power button, which is convenient but fraught with errors in the pocket. In this article, we will discuss in detail the algorithms for disabling this feature and consider the adjacent settings that affect the behavior of the LED flash.
There are several ways to solve the problem, from simply switching the toggler in the settings to using hidden menus of engineering diagnostics, we will look at each of them so that you can choose the most suitable for your version of firmware. It is important to understand that the layout of the menu may vary slightly depending on the regional version of the software.
The main method of disconnection through settings
The easiest and safest way to prevent the system from turning on the flashlight without unlocking is to change the button settings. Poco X3 Pro owners need to proceed to the main menu of smartphone settings. The interface can be in Russian or English, so we will specify both options for item names.
Go to Settings, then look for Additional settings, which is where the button and gesture settings are hidden, or look for the Buttons subsection, or search for the Turn on flashlight option. MIUI This paragraph is separately.
- 🔦 Open your smartphone settings and find the "Additional Features" section".
- 🔦 Select "Buttons" or "Button Management".
- 🔦 Find the option "Enable flashlight" and switch the switch to an inactive state.
- 🔦 Check your gesture settings to prevent flashing by double tapping.
⚠️ Warning: After disabling this feature, double-pressing the power button will no longer activate the flashlight.If you need light, you will have to unlock the phone and use the widget or camera app.
If the standard path didn't work, maybe your version of the shell has a changed menu structure, so you can search by settings, click on the magnifying glass at the top of the settings screen and type in the word "flashlight" or "flashlight."
Setup of lock screen gestures
The MIUI shell is known for its abundance of gestures that are designed to make life easier for the user, but often create inconveniences. The Poco X3 Pro features Mode in the Pocket and various touch commands. Sometimes the flash lights up due to mistaken recognition of touch through the fabric of the pocket.
Check the lock screen settings. Go to Settings → Lock screen. Here you should pay attention to Gestures or Additional. Make sure that the functions associated with double touching or swiping your finger on the screen off if they lead to the camera starting with a flash.
It's also worth checking the settings of the Camera app. Inside the app itself, there's often an option called "Shoot with the screen off" or similar. If it's active, accidentally opening the camera curtain can activate the LED flash as an autofocus element or just as an indicator of operation.
☑️ Checking the gesture settings
Pay special attention to the "Mode in the pocket" function, which is designed to prevent false pressing, but it doesn't work properly on some software builds. Try temporarily turning it off and check if the problem persists. If the flashlight stopped burning on its own after switching off, it was about calibrating the proximity sensor.
Using the Engineering Menu for Diagnostics
For advanced users who don’t find a solution in standard settings, there is access to the hidden CIT diagnostic menu, which is built into Xiaomi and Poco to check the functionality of hardware components, which can force the flashlight to turn off or check if the problem is hardware.
To enter the menu, open the Phone app and dial the code ##6484##. If the code doesn't work, go to Settings → About phone and quickly click on Kernel version several times until the test menu opens.
In the test list, find Flashlight or Torch. By clicking on it, you can force the flash to turn on and off. If the flashlight is unstable in this menu (blinks, does not light up or goes out), the problem may be the drivers or physical damage to the plume.
| Parameter | Value normal | Sign of malfunction | Action. |
|---|---|---|---|
| Response to the team | Instant switching on/off | Delay or lack of response | Reset or reset |
| Brightness of glow | Stable, no pulsation. | Blinking or dim glow | Testing voltage |
| Heating the module | Minimum 1 minute | Strong heating in 10 seconds | Turn it off now. |
| Working at CIT | Correct. | Test error | Update of the PO |
What if the code doesn't work?
Problem with proximity sensor and case
A common cause of a phantom flashlight on the Poco X3 Pro is a contaminated or closed proximity sensor located at the top of the screen, next to the speaker. If the sensor is closed with a tight case, a protective glass with a black frame or just dirt, the phone may believe that it is in the pocket and lock the screen, but incorrectly activate functions.
Check if your accessory covers the top of the display, especially for magnetic-clasp book cases or thick shock-proof cases, and if the magnetic field or physical sensor overlap can cause chaotic behavior, including triggering a notification flash.
Try removing the case and rubbing the top of the smartphone with a soft cloth. After that, reboot the device. If the problem disappears, then it was the accessory, in such cases, it is recommended to replace the protective glass with a thinner one or cut off part of the case in the sensor area.
⚠️ Warning: Use of poor quality black-framed protective glasses is the most common cause of sensor problems at Poco X3 The frame often covers the light sensor, which is why the phone does not realize that it was taken out of his pocket.
The Impact of Third-Party Apps and Widgets
Remember, the built-in flashlight isn't the only app that can control an LED. Many Google Play apps request camera and flash access for their own needs: scanners. QR-codes, video calling applications, voice recorders with visual indications and even some games.
Analyze which apps you have recently installed. If a flashlight lights up when a particular program is running, check its permissions. Go to Settings → Apps → All apps, select a suspicious program and press Permissions. Disable access to Camera and Lantern if it is listed separately.
- 📱 Barcode scanners often use flash to illuminate.
- 📱 Selfie apps may include LED-flashlight.
- 📱 Weather widgets or batteries sometimes have a blinking function when notified.
- 📱 Alarm programs can use a light signal.
Also check notification settings. MIUI has a flash-on-notification feature. It can be activated for all applications at once. To turn this off, go to Settings → Additional settings → Hearing