Why Xiaomi Phone Is Constantly Rebooting and How to Fix It

Introduction: why Xiaomi smartphone is “hungry” on reboots

You have included Xiaomi Redmi Note 12, POCO X5 Or another model, and instead of the usual desktop, you saw an endless logo. MIUI, This problem is familiar to many smartphone owners of the brand. Cyclical reboot (or bootloop) can occur on new devices and gadgets with a long history of use. The reasons lie in software failures, damaged components or even unsuccessful firmware experiments.

Unlike a one-time reboot, when the phone freezes and restarts, constant reboots signal a serious problem. 11T Pro may go into a cycle due to the conflict of the kernel system with the camera drivers, and Redmi 9A — It's important to diagnose the source of the problem quickly so that it doesn't make things worse. In this article, we'll look at all the possible causes, from a simple memory overload to critical hardware defects, and give you step-by-step instructions to restore the functionality.

We warn you right away: some techniques require technical skills (like flashing through Fastboot or soldering contacts). If you're not sure about your abilities, you'd better go to a service center. But in 70% of cases, you can solve the problem yourself without resorting to radical measures.

1. Software failures: viruses, updates and “curved” firmware

The most common cause of cyclical reboots is software conflicts, most often after:

• 📱 Failed update MIUI (particularly OTA, If a corrupted file has been downloaded).
• 🦠 Viruses (for example, through pirated viruses) APK or fake "optimizers»).
• 🔧 Rooting or installing custom firmware (e.g. LineageOS on an unaccompanied model).
• 🗑️ Delete system applications (such as com.miui.analytics or com.xiaomi.finddevice).

Typically, software failures occur immediately after the system is manipulated, such as after installing an update or cleaning the cache through Recovery. MIUI or animation, but does not reach the desktop, the fault of the software in 90% of cases.

The first thing you need to do is try booting up in safe mode.

1. Turn off the phone (if it hangs on the lock screen for even a short time, hold the power button for 10-15 seconds).
2. When turned on, hold the volume button until the Safe Mode sign appears in the lower left corner.

If you're in safe mode, the phone is stable, it's a problem with one of the apps that you've installed, and if you keep rebooting, it's the system itself.

Checklist: what to do in case of a software failure

⚠️ Warning: If the phone only reboots when connected to charging, the problem may be in a damaged power controller. Do not try to sew the device in this state - this can lead to a short circuit!

2. Post-update conflicts MIUI: fallback

Updates MIUI Often, not only new features, but also critical bugs are brought in. MIUI 14.0.3 for Xiaomi 12 Pro was detected bug, which left the phone in the bootloop when activated mode “Performance”. MIUI 13.0.5. POCO F3 The failure occurred when connecting to 5G-network.

If the reboot started immediately after the update, there are two options:

1. Reverse to the previous version via Recovery (if there is a backup).
2. Fastboot your phone manually (if Recovery is not available).

Instructions for rollback through Recovery:

1. Download the full firmware (not downloaded) OTA!) For your model from the official Xiaomi website (choose the Recovery version) ROM).
2. Rename the file to update.zip and place it in the root of internal memory (if the phone is even briefly turned on) or on the SD-map.
3. Press Power + Volume Up to Enter Recovery.
4. Select Install update.zip → Yes.

If Recovery's not available, you'll have to use Fastboot.

1. Install Platform Tools on your PC.
2. Download Fastboot ROM for your model and unpack it.
3. Connect your phone to your PC in Fastboot mode (clip Power + Volume down).
4. Launch the file. flash_all.bat (for Windows or flash_all.sh (for macOS/Linux).

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If the phone doesn’t turn on after running for more than 10 minutes, don’t panic. Some models (such as the Xiaomi 12 Series) load up to 15-20 minutes for the first time.

Hardware malfunctions: from battery to motherboard

If the software methods didn't work, the problem is the hardware, and the most common ones are:

• 🔋 Worn-out battery (swelling, short circuit).
• 🔌 Damaged charging connector (oxidation, break of contacts).
• 🌡️ Processor overheating (due to dried heat paste or dust).
• 🛠️ The dumping of memory chips (for example, eMMC or UFS).
• ⚡ Faulty power controller (frequent problem after falls).

How to diagnose a hardware malfunction:

1. Check the battery: if the phone reboots at 20-30% charge or turns off when charging is connected, the battery is to blame. The bloated battery needs to be replaced urgently (it can damage the board!).
2. Check the charging connector: illuminate with a flashlight - if the contacts are blackened or oxidized, a replacement is required.
3. Check for overheating: If the case is hot even when it is off, the problem is with the cooling system or processor.

The most dangerous malfunction is the memory chip dump.

• The phone is turned on, but immediately restarted.
• Artifacts appear on the screen (stripes, flickering).
• In Fastboot, a device is defined as an unknown device.

In this case, only soldering of the chip in the service center will help (the cost is from 3000 to 10 000 rubles, depending on the model).

⚠️ Warning: If the phone only reboots when connected to a computer, the problem may be short circuit on the board.Do not connect it to the PC before repair - this can damage USB-motherboard!

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To check the battery without disassembly, install the AccuBattery app (if the phone turns on for even a short time), which will show the real capacity and wear level.

4.Overheating: Why Xiaomi is switching off from high temperatures

Many Xiaomi models (especially gaming ones like Black Shark 5 or more) POCO F4 GT) They're overheated, and if the processor's temperature is above 80-90.°C, the hardware protection goes off -- the phone turns off or reboots:

• 🔥 Clogged radiator (dust, dirt).
• 🧴 Dried thermopaste (after 2-3 years of operation).
• 🎮 Long-term loads (games, video rendering).
• ☀️ External factors (direct sunlight, heat).

How to check the temperature:

1. Install the AIDA64 or CPU Monitor app.
2. Run a performance test (for example, in the 3DMark).
3. If the temperature is greater than 75°C - cleaning required.

What to do:

1. Clean the case: blow the connectors with compressed air (do not use metal objects!).
2. Replace the heat paste: Disassemble the phone and apply a new paste (e.g. Arctic) MX-6).
3. Turn off background processes: in the Battery settings → Select the Performance Mode Balance.

If the phone overheats even in a simple one, the problem may be a faulty temperature sensor or a damaged cooling system (for example, a heat pipe fell off), in which case only repair will help.

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On some models (e.g. Xiaomi) 12S Ultra) overheating could be caused by a defect in factory thermal paste. Xiaomi has acknowledged the problem and is offering a free replacement at service centers.

5 Memory and storage: When the phone is choking in data

If the internal memory of the phone is filled to the full, the system begins to “glutch” – applications are crumbling, the interface is laid, and in severe cases the device goes into a cycle of reboots. 9C or POCO C31).

How to check:

1. Go to Settings. → Warehouse.
2. If the free is less than 1-2 GB, this is a critical value.
3. Check the Cash and Garbage section (in) MIUI there's a built-in cleaning).

What to do:

• 🗑️ Clear the cache: in Settings → Annexes → All apps select heavy programs (e.g. Facebook, TikTok) and click Clear Cache.
• 📁 Transfer files: photos and videos move to SD-Map or cloud (Google Photos, Mi Cloud).
• 🔄 Reset: If nothing helps, do Hard Reset (but save data first!).

If the phone reboots when you try to record data (for example, when shooting a video or installing an application), the problem may be a damaged flash memory. ADB:

adb shell


smartctl -a /dev/block/mmcblk0

If there are lines in the conclusion with reallocated_sector_ct or pending_sector — The memory is failing and needs to be replaced.

⚠️ Warning: Don’t use programs like Clean Master or CCleaner to clean up your memory! they often delete important system files, which can make the problem worse.

6.Contacts and plumes: when the problem is in the "trifles"

Sometimes the reason for reboots is mechanical damage, such as in the outgoing contacts or damaged plumes, which is true for phones that often dropped or disassembled.

Symptoms:

• The phone is reloaded when shaking or changing position.
• The screen flickers or goes out before rebooting.
• The sound in the speakers is distorted or lost.

What to check:

1. Battery plume: If it has gone, the phone can turn off at the slightest movement.
2. Display Contacts: on Xiaomi with AMOLED-screens (for example, Mi 11) often depart the matrix plume.
3. Antenna plumes: If the phone reboots when you call or turn on mobile data, the communication module is to blame.

How to fix it temporarily (if you don’t want to take your phone apart):

• Carefully press the back cover in the area of the camera or battery - if the reboots have stopped, the problem is contacts.
• Put the phone on a flat surface and don’t touch it – if it’s running consistently, the outgoing plume is to blame.

For a full repair, you will need to disassemble and solder contacts or replace plumes. The cost in the service is from 1,500 to 5 000 rubles.

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If the phone reboots when you press the screen, the problem may be a damaged digitizer, and check if there are any dead zones or spontaneous taps on the screen.

7.When to contact the service: signs of serious breakdowns

If you've tried all the methods, but the phone is still restarting, it's time to call the experts. Here are the red flags that signal a difficult repair:

• 🔥 The phone is still warmed even when it is off.
• ⚡ Colored stripes or artifacts appear on the screen.
• 🛠️ In Fastboot, the device is defined as Qualcomm. HS-USB QDLoader 9008 (Brick sign»).
• 💥 The phone does not turn on at all (even on charging does not respond).
• 🔋 The battery swelled (see above the raised back cover).

Cost of repair in the service:

Where to repair:

• 🏢 Xiaomi’s official service is a 6-12 month warranty, but more expensive.
• 🔧 Local workshops are cheaper, but the risk of “jobs” is higher.
• 📦 Self-repair – only if you have experience (e.g. replacing your battery with a Redmi 9 is relatively easy).

⚠️ Warning: If the phone is warranty, don't open it yourself! This will void warranty obligations. First, try resetting your settings through Recovery -- if it doesn't work, take it to the service.

FAQ: Answers to Frequent Questions