When the beloved Xiaomi suddenly goes out and refuses to react to touch, it can take anyone by surprise: the screen remains black, there is no vibration, and attempts to charge the device lead to nothing. This can mean both a banal battery discharge and a serious failure in the software or hardware.
Before you panic and bring your gadget to the service center, you should do your own diagnostics. Often the problem lies in the "hang" of the system, which requires a forced reboot, or in the oxidation of the charging port contacts, Understanding the nature of the failure will help save time and money on recovery.
In this guide, we’ll look at all the possible reasons why Xiaomi’s phone has turned off and won’t turn on, and provide step-by-step instructions for bringing the device back to life.
Primary diagnosis and exclusion of the discharge
The most obvious, but often ignored, reason is the battery's deep discharge, so if the smartphone was lying unused for a long time or was heavily operated in the cold, the battery could go into protection, in which state the charging indicator may not light up immediately after the cable is connected.
Leave the device on charge for at least 30-40 minutes, even if the screen is not showing signs of life. Use only the original power supply and cable, as third-party accessories may not give enough current to "wake up" the power controller.
Sometimes, light heating of the back cover (such as warm hands or moderate battery heat) helps if the phone was cold. Lithium-ion batteries temporarily lose their ability to give current at low temperatures, and warming returns their chemical activity.
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If the phone is heated in the sun or in the car, don't put it on a quick charge right away.Let it cool to room temperature to avoid battery bloating.
- 🔌 Use the original cable USB-C and an adapter with a capacity of at least 18 W.
- ⏳ Leave your smartphone connected to the network for at least 40 minutes without trying to turn on.
- ❄️ Check if the gadget was at extremely low or high temperatures.
Hard Reset (Hard Reset button)
If the battery is accurately charged, but the screen is black, most likely, there was a system crash - the SystemUI process or the display drivers freeze. In this state, the usual press of the power button does not work, because the software cycle is closed. It requires a hardware reset of the power controller.
To perform this procedure on most Redmi and Poco models, you need to press the on button and hold it for 10-15 seconds, in some cases, you need a combination: press the volume button "Up" and the power button simultaneously.
⚠️ Warning: Don't be afraid to hold the button for long. Hard reboot doesn't delete your data (photos, contacts), it just forcibly breaks the motherboard's power chain and starts the bootloader again.
If the phone goes out again after a vibration or the appearance of the Mi logo, system files may be damaged or there is a conflict of hardware components, in such a situation, the reboot cycle can continue indefinitely, which requires a transition to deeper recovery methods.
☑️ Hard reset algorithm
Diagnostics through Fastboot mode
Fastboot mode is a low-level protocol that allows you to interact with your phone directly, bypassing the Android operating system. If the phone enters this mode, then the hardware (screen, processor, memory) is most likely working, and the problem is software-based.
To log into the Fastboot on the device turned off, press the volume button (“Down”) and, holding it, connect the USB cable going to the computer. The Fastboot logo with the image of a rabbit fixing an android, or the inscription in orange, should appear on the screen.
fastboot devicesThis command, entered in the command line of a PC with ADB/Fastboot installed, will confirm communication with the phone. If the device is detected but does not load into normal mode, the problem may lie in a damaged boot partition or critical update errors.
- 🐇 Entrance is performed by a combination: Volume Down + Connection USB.
- 💻 To exit Fastboot, hold the power button near 10-15 seconds before vibration.
- 🛠 Mode allows you to reflash the device or check the status of the bootloader.
Recovery through the Recovery Menu
If the Fastboot isn't available or it doesn't work, the Recovery Menu comes to the rescue. Xiaomi's two smartphones are standard (MIUI Recovery) and custom (TWRP) if it's installed earlier. We're interested in the regular menu that allows you to reset or reboot.
To get into Main Menu (MIUI Recovery), on the phone turned off, press the power button and the volume button ("Up") at the same time. Hold them until the logo appears, then release power, continuing to keep the volume up until the menu appears.
Navigation in this menu is carried out by volume buttons (up/down), and the choice of item is by the power button (or touch, if the touchscreen in the Recovery works).
| Item | Function | Risk of data loss |
|---|---|---|
| Reboot | Normal system reboot | No. |
| Wipe Data | Full reset to factory settings | High (all removed) |
| Connect with MIAssistant | Connection mode to PC for firmware | No (depending on the action) |
| Safe Mode | Starting in Safe Mode (on new MIUI) | No. |
⚠️ Note: Selecting Wipe Data will result in the complete removal of all photos, contacts and applications. Use this method only if other methods did not help and the data is not important or stored in the cloud.
If the phone doesn’t turn on again after selecting Reboot, try to select Connect with MIAssistant, connect the cable to your PC, and use the Mi Flash Tool program to try to restore the firmware without losing data (Clean All mode with saving user data does not always work).
Hardware malfunctions and problems with the display
Not always the absence of an image means the death of the smartphone. Sometimes the phone works: you hear the sound of the notification, you hear the vibration, you charge, but the screen remains black, this indicates a malfunction of the display matrix, the plume or the image controller.
You can test this theory by calling the number of the SIM card installed in the problem device, and if the horns go and the phone doesn't respond visually and to the sensor, then the system works, but there's no picture. USB-devices, motherboard alive.
What to do if the screen is broken?
Another common hardware problem is the oxidation of the contacts of the battery or the connector itself on the board. If the phone was exposed to moisture (even just high humidity in the bathroom), plaque could form inside, interrupting the power chain.
- 🔊 Call your phone to check the speaker and vibration response.
- 🖥 Connect to the PC to check the reaction to USB-signal.
- 🔋 Carefully press the back cover in the battery area (if removable or design allows) to check the contact.
Critical errors of the loader and firmware
If the phone turns on, shows the Mi or Redmi logo, and then shuts down or freezes again, it's called a "bootloop" because it damages the system partition or vendor.
This often happens after a failed update “over the air”, interrupted process of flashing or interference with system files (getting root rights, removing system applications), in which case the software reset buttons will not help, you need a complete flashing.
A critical bootloader error is often marked with red text on the black screen when trying to turn on, warning that the device cannot be Trusted.
To solve the problem, you will need a PC, cable and utility Xiaomi Mi Flash Tool. You need to download the official firmware (Fastboot version, with the extension.tgz) for your particular model and start the recovery process.
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Cyclical restart (bootloop) in 90% of cases is treated only by completely flashing the device through the computer with loss of user data.
The firmware process requires a stable connection and precise follow-up of instructions, and interrupting the recording of data into the phone’s memory during this procedure can turn the device into a “brick” that can not be restored even in the service center.