When your favorite smartphone suddenly stops responding to the power button, it can knock out any user, the screen remains black, the indicators do not burn, and the usual vibrations when connecting the charging are absent. However, it is too early to panic: in most cases, the device did not fail completely, but simply went into a deep software failure or “hang” at the level of the kernel of the system.
Before you carry the gadget to the service center, it is worth trying a number of methods of forced reboot and reset static voltage. Often it is the accumulated electric charge in the controllers that blocks the normal start of Android. If you encounter Xiaomi not turning on, first of all make sure that the problem is not a discharged battery or a faulty cable.
In this guide, we will go into detail the algorithms for different lock scenarios, learn how to enter Recovery mode, what to do with Fastboot mode, and when you need to flash through your computer. If the phone falls into the water or has obvious signs of physical impact, software methods can be useless and even dangerous - this requires diagnosis by an engineer.
Primary diagnosis and exclusion of simple causes
Before we go to complex code manipulation and boot modes, we need to eliminate trivial factors. Often users mistake a deep discharge or fault of the cable for a breakdown of the device itself. If the smartphone has been idle for a long time, its battery could go into “sleep mode” and it takes time to activate it.
Try to leave the device on charge at least on 30-40 Just use the original power supply and the quality of the power supply. USB-cable, as cheap analogues may not transmit enough current. Also carefully examine the charging connector: villi from the pocket or dust can prevent normal contact.
If after a long charge the indication is not all, try to wake up the power controller. To do this, press the on button and hold it for a while. 20-30 Sometimes it helps to have a combination of volume and power buttons, and if the phone vibrates, but the screen is black, maybe the display or the plume has burned down, and the system is working.
⚠️ Warning: Do not use powerful power supplies from laptops or unknown manufacturers with questionable circuitry to charge. Unstable voltage can permanently disable the charge controller on the Xiaomi board.
Reset buttons (Hard Reset buttons)
When Android software freezes, a standard power button press may not work because the system ignores interrupts, and in such cases, you need to perform a hardware reset that opens the power chain at the hardware level, which is the safest way to not delete your data.
For most Redmi and Poco models, long delay is the right method: press the on button and hold it continuously for 15-20 seconds; if the phone reacts with a vibration or logo, release the button; if there is no reaction, try the volume button combination.
There are several variations of keyboard shortcuts that depend on the specific model and firmware version. Try the following sequences, holding them for about 10-15 seconds:
- 🔘 Power button + Up Volume (often used to log into Recovery, but can cause a reboot).
- 🔘 Power button + Volume Down (standard entrance to Fastboot from which you can choose Reboot).
- 🔘 Loudness “Up» + Volume "Down" (simultaneously clamping both buttons).
If neither combination worked, the power button may have been physically damaged or the train has moved away, in which case a careful but strong push on the button area with a finger or blunt object (through a fabric) can sometimes help restore contact.
☑️ Pre-reset check
Using Recovery Mode to Reset Settings
If the phone is responsive to buttons but not loading the operating system, it's likely that the system files or cache are damaged, and the Recovery menu will help, which is a special diagnostic mode built into the device's memory regardless of the main MIUI system.
To get into this menu, turn off the phone (if it's still on) or wait for the full discharge, then press the power and volume button "Up." Once the Mi logo appears, release the power button, but keep the volume up until the menu appears in English or Chinese.
Navigate the menu with volume buttons (up/down) and power buttons. You need to find Wipe Data or Clear Data. Note: Full reset will delete all photos, contacts and apps.
| Item | Function | Impact on data |
|---|---|---|
| Reboot | System restart | No change. |
| Wipe Cache | Clearing temporary files | Data saved |
| Wipe Data | Full reset (Factory Reset) | All deleted. |
| Connect with MIAssistant | Reim for PC connection | No change. |
Once you have selected Wipe Data, confirm the action by selecting Confirm or by entering the word yes if required. The process will take a few minutes. Once completed, select Reboot -> Reboot to System.
What to do if the Recovery menu is in Chinese?
Fastboot mode and its capabilities
Fastboot mode is a low-level protocol that allows you to interact with the phone bootloader directly through the phone. USB-If the phone is hanging on the logo or shows a hare fixing an android, you're already in that mode or you can get into it.
To enter, press the power and volume button "Down" simultaneously. The screen will show a picture of a hare in an ooschank repairing robot. Connect the phone to a computer. If the PC makes a sound of the device's connection, then the communication controllers are good.
In this mode, you can try to clean up the data without logging in to the menu. However, most often, the Fastboot is used for flashing. If the system does not start, but the phone is determined in Fastboot, the chances of recovery software methods are very high.
⚠️ Warning: While in Fastboot mode, do not turn off the power cable abruptly. Interrupting communication while writing data can lead to "bricking" the device, when recovery is possible only through soldering of the programmer.
Recovery with the computer and Mi Flash Tool
When internal methods are powerless, a computer comes to the rescue. The official Xiaomi Mi Flash Tool allows you to “fill” a clean system into the phone’s memory, bypassing the damaged boot, USB-cable and firmware file (Fastboot) ROM) for your model.
The process is as follows: download the firmware with the.tgz extension (not.zip!), unpack the archive. Launch the Mi Flash Tool, press the refresh button and connect the phone in Fastboot mode. If the drivers are installed correctly, the serial number will appear in the device field.
The path to the firmware files should be short and without Cyrillic, such as: C:\ROM\mi_global\Select the firmware file in the program, specify the cleaning method (Clean all is recommended for complete error removal), and press Flash. The process will take 200 to 500 seconds. Once successfully completed, the phone will restart itself.
💡
Using the original Fastboot firmware and USB 2.0 cable greatly improves the success of firmware through the Mi Flash Tool.
Problems with battery and power controller
If the software methods do not help, and the phone does not respond even to the connection to the PC (no sounds, no vibration, no heating in the area of the processor), the problem lies in the hardware (PMIC).
Lithium polymer batteries degrade over time. 3-4 In the years that have passed, it's possible that the voltage on the cells has dropped below the critical threshold, and the charge controller is blocking the switch on for safety purposes.
Also common is the oxidation of contacts after moisture or impact, and even if the phone worked after a fall, a microcrack in soldering could lead to loss of contact, in which case a diagnosis using a multimeter is necessary in a service center.
- 🔋 The phone warms up when charging, but does not turn on - a short circuit or failure of the controller is likely.
- ❄️ The phone is cold and unresponsive – a power chain break or a deep discharge.
- ⚡ The indicator flashes, but there is no loading - a problem with the display or plume.
Don't try to open the phone yourself if you don't have the experience and tools. Damage to the waterproof seals or carelessly turning off the plumes can make things worse.