Why Xiaomi phone is rebooting itself: a full analysis of the reasons

When your Xiaomi suddenly goes out and turns on again, it can be taken by surprise at any time, not just an annoyance, but a signal that a system or hardware has crashed, most often a software conflict or a crowded memory, but sometimes the hardware is to blame.

Before you bring a device to the service, you need to conduct a thorough diagnosis. Self-finding the cause will save time and money. In this article, we will discuss in detail why the Redmi or POCO phone goes into an endless reboot, and how to bring the gadget back to life.

If the device starts to behave strangely, then the MIUI or HyperOS operating system tries to tell you about the error, ignoring the problem can lead to complete data loss or battery failure.

Programmatic failures and memory overflow

The most common reason for spontaneous reboots is a lack of RAM, where when RAM is crammed with background processes, the system can't process new commands properly and initiates an emergency restart, a protective mechanism that prevents the processor from freezing.

Also often to blame are corrupted system files or conflicts of newly installed applications. If you notice that Xiaomi phone reboots exactly after a certain game or program is launched, the problem lies in it.

The application cache tends to accumulate and take up a critical amount of internal memory. When free disk space runs out, the operating system ceases to function stably. Regular cleaning of the cache is a mandatory procedure for owners of budget models.

Note the status of system updates: Incomplete installation of the MIUI patch or interrupted boot process can cause cyclical reboots, in which case the system tries to roll back to the previous version, but fails.

Problems with the battery

Physical wear and tear is the second most popular reason why the phone turns off itself. Lithium-ion batteries lose capacity over time and cannot produce the necessary current under load. When the voltage surges, the device instantly shuts down.

⚠️ Warning: If your smartphone case swells or the back cover is removed, stop using the device immediately.Operation of a damaged battery may cause a fire.

Unstable voltage is often seen when the charge level is low. If a Xiaomi phone turns off at 15-20% charge, this is a sure sign of degradation of the chemical element. Calibration of the battery at home helps only temporarily, but does not physically solve the problem.

Oxidation of the battery contacts can also cause loss of communication with the motherboard, and even a slight tap on the body in this case provokes a reboot, which is typical for phones that have previously been hit or fell.

To check the status of the battery, you can use special utilities available on Google Play, which will show the real capacity and current voltage, and if the wear exceeds 20%, it is recommended to replace the battery in the authorized service.

Overheating of the processor and cooling system

Thermal protection is an important security component of any smartphone, and when the CPU temperature reaches critical levels, the system forcibly shuts down the device to prevent the chip from burning out, which often happens during games or 4K video.

Clogging the cooling system with dust disrupts the heat sink, and if your Redmi or POCO has been running for several years, a dust coat could accumulate inside, blocking the vents, in which case the phone heats up even when it is in standby mode.

The use of substandard chargers also leads to overheating. Cheap power supplies cannot stabilize current, which causes the temperature of the power controller to jump. Always use original USB-C cables and adapters.

GPU failures can also trigger a reboot. If the video core drivers are not working properly, when the graphics are running, the system crashes. A firmware update often contains fixes for such bugs.

Update and firmware conflicts

Installing MIUI or HyperOS betas is always a risk. Test builds contain bugs that developers haven't yet fixed, which is why phones reboot more often on firmware than on stable versions.

A failed OTA update can damage the Recovery partition, and if the power is cut or the internet is lost during the boot, the phone can go into a boot loop, requiring a computer flash.

System modification also plays a role: installing third-party themes, fonts, or obtaining Root rights violates the integrity of system files, and any change to the system kernel can lead to instability.

If the phone starts to behave strangely after the upgrade, try resetting the settings, which will delete all user data, but return the system to factory cleanliness.

Hardware malfunctions and power button

Mechanical sticking of the power button is a common problem after moisture or dust hits. If the Power button gets stuck in the internal position, the phone will constantly receive a signal to reboot. Check the movement of the button with your finger.

The slipping of the display plumes or buttons also causes chaotic behavior in the system, and when hit, the contacts can oxidize or shift, in which case the phone can respond to non-existent presses.

⚠️ Warning: Do not try to disassemble the phone yourself if you do not have the experience and tools.You can damage fragile plumes or break the tightness of the case.

Motherboard problems, such as chip dumps or chips, are less common, but they do occur, usually due to a severe overheating or fall, in which case the phone can reboot on the brand logo.

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Try to tap your finger on the ends of the phone carefully, without fanaticism, in different places, and if it reboots at the moment, the problem is the contact of the plumes or buttons.

Diagnostics of the power button can be done via the engineering menu, and enter the code ##6484## in the Phone app and select the button test to see if the pressing system registers correctly.

Malware and miners

Installing applications from unverified sources is a direct route to infection. Hidden miners load the processor 100%, causing overheating and subsequent reboot. Xiaomi's phone can slow down and warm up even in a simple one.

Advertising viruses can also block the system, they can be embedded in system processes and cause conflicts. If you notice a pop-up on your desktop, immediately check the device with an antivirus.

To clean up, use proven solutions like Dr.Web or Kaspersky to find and defuse threats, and once the virus is removed, it is recommended to change the passwords from important accounts.

Resolving the problem

Start with Safe Mode. Press the off button, then hold the "off" option on the screen for a long time until the suggestion to go to Safe Mode appears, and if the phone does not restart in this mode, then the third-party application is to blame.

Resetting to factory settings is a radical but effective method. Go to Settings → About Phone → Reset. This will delete all data, so save photos and contacts in the cloud in advance.

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If the reset and the flashing didn't work, the problem is hardware, and you need a diagnostic at the service center.

Flashing through your computer using the Mi Flash Tool allows you to fully restore the software part. Download the official firmware from the MIUI bootloader site and follow the instructions.

In conclusion, the stability of the smartphone depends on comprehensive care: monitor the temperature, do not fill the memory to the fullest and use quality accessories. If software methods are powerless, contact the professionals for repairing hardware.