POCO M3 not included: full recovery guide

The situation when the POCO M3 smartphone stops responding to pressing after a scheduled or emergency restart is quite common and can put the owner in a baffle.The black screen, lack of vibration and reaction to the charger are often perceived as signs of complete failure of the motherboard. However, in most cases we are talking about a software freeze of the power controller or a failure in the boot cycle of the MIUI operating system.

Before you bring your device to the service center, you should try to perform a number of self-diagnostic procedures. Forced reboot and entry into recovery modes often eliminate logical errors without losing data. It is important to understand that prolonged exposure to the device in a state of shutdown at deep discharge could aggravate the situation, so you need to act consistently and in cold blood.

In this tutorial, we will discuss all possible scenarios, from banal battery discharge to complex cases of “bricking”, you will learn how to distinguish a software failure from a hardware malfunction and what steps to take to revive the Xiaomi POCO M3 on your own.

Diagnosis of the condition: why the phone is silent

The first step is to eliminate trivial reasons for the lack of reaction. Often users mistake a deep battery discharge for a breakdown. If the POCO M3 phone was discharged for a long time, the chemical processes inside the lithium-ion battery could temporarily reduce the voltage to a level insufficient to start the system, in which case the charging indicator may not light up immediately after the cable is connected.

Also worth noting is the state of the charging port: The M3 uses a USB Type-C connector that is sensitive to dust and pile. Mechanical contamination of the contacts prevents current from flowing, creating the illusion of a device failing. Visual inspection with a flashlight will help detect the presence of debris inside the socket.

⚠️ Warning: If the phone heats up in the camera or processor area when connected to charging, but the screen remains black, immediately turn off the power.This may indicate a short circuit inside the circuit or a bloated battery.

Sometimes the problem lies in the cable itself or the power supply. Using non-original low-current accessories may not be enough to wake up the POCO M3 power controller. Try replacing the cable and adapter with one that is known to be serviceable, preferably with support for fast charging of 18W or higher.

Reset buttons (Hard Reset buttons)

If the screen is black, but the device is actually on and hanging, a combination of hardware buttons will help. MIUI-based Android has a built-in watchdog mechanism that forcibly reboots the device with prolonged keystrokes. This is the safest way to reanimate a smartphone that does not respond to the sensor.

To perform the procedure, you need to press the on button and hold it for 10-15 seconds. Some versions of POCO require simultaneous pressing of the on and off buttons. You need to hold the buttons for a long time, sometimes up to 20 seconds, until the brand logo appears.

It is important not to release the buttons at the first vibration, if the logo has not yet appeared. The process of resetting the static voltage from the controller can take time. If after 3-4 attempts at different intervals of exposure, there is no reaction, then we move to deeper methods of diagnostics via a computer connection.

Checking system response through PC and boot modes

When the screen is not showing signs of life, connect the phone to a computer with installed Xiaomi USB Drivers. audible connection signal or the appearance of a new device in the Windows task manager will indicate that the hardware is alive. The system can identify the device as a QDLoader 9008, which indicates a transition to emergency boot mode, or as Android Bootloader Interface.

To enter Fastboot mode, you need to press the volume button and, without letting it go, connect the USB cable to the computer. On the screen of a working display, a hare should appear in headphones repairing an android. If the display is black, but the Xiaomi Android Bootloader appears in the Windows Device Manager, then the problem is precisely in the display or bootloader of the system.

There's also Recovery mode. To enter, press the volume button and plug in the cable. If the phone vibrates and enters the recovery menu (even if it's not visible on the screen), the computer will react to the new device again, which confirms that the motherboard is functional.

Resetting settings via Recovery Mode

If you get a response from the device and log into the Recovery menu (usually a black screen with a logo and menu in English/Chinese), you can try to reset user data. This procedure will delete all files, but often eliminates system file conflicts that interfere with booting.

You need to select Wipe Data, then confirm the action by selecting Wipe All Data. Once the process is complete, select Reboot -> Reboot to System. The first download after the reset can last up to 10 minutes, so be patient and don't touch the device.

⚠️ Note: Wipe Data permanently deletes photos, contacts and applications, and only use this method if the data is not critical or backed up in the cloud.

In some cases, especially after a failed upgrade, a standard reset doesn't help. Then you need to use the Xiaomi ADB Fastboot Tools tool or the official Mi Flash Tool utility to completely flash the device. However, this requires an unlocked bootloader or an authorized Mi Account, which can be difficult for the average user.

Problems with the battery and the plume of the display

The POCO M3 is known for its design features. A common cause of black screens when the phone is running (notification sounds, vibrations) is a departed display plume. If it falls or heats up, the connector can lose contact with the motherboard.

Also, consider the battery condition: If the phone is a few years old, the capacity may have degraded so much that there is not enough peak current to start the processor, in which case the phone can only turn on while charging, but immediately go out after the cable is turned off, and replacing the battery in such cases solves the problem.

To check the plume requires a careful opening of the back cover (it is plastic and removes after heating around the perimeter), you need to snap the protective plate and reconnect the display plume. Often even a simple movement of the connector returns the image.

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Before opening the case, be sure to discharge the battery to less than 25%, which will reduce the risk of fire or short circuit in case of accidental damage to the battery tool.

When you need to go to the service center

There are situations where software and simple diagnostics don't help. If the computer doesn't see the phone in any of the modes (Fastboot, Recovery, EDL), and charging doesn't cause even a minimal indication, the power controller or the motherboard itself probably failed.

Another alarming symptom is the specific smell of burning or visible corrosion on the charging port contacts, in which case self-attempts to revive the device can lead to its final failure. BGA-components and use of a programmable power source.

It is also worth contacting the service if the phone continues to go into an endless bootloop after the data reset, which indicates a physical memory failure (eMMC/NAND) that requires a chip replacement or complex hardware and software recovery.

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The lack of response to the connection to the PC in all modes (including EDL) with a 90% probability indicates a hardware malfunction of the motherboard.

Frequently Asked Questions (FAQ)