You have your own Xiaomi Redmi Note 12 or POCO X5 Pro, when suddenly the screen goes out, the phone vibrates - and a few seconds later the logo MI It reappears on display, and it repeats itself over and over again, turning the smartphone into a useless brick, a problem that many Xiaomi device owners know, and can be caused by software failures and hardware malfunctions.
In this article, we will not just list the possible culprits of the cyclical reboot, but will analyze each case with step-by-step diagnostics, self-check tests and solutions – from banal flashing to replacement of components.
If your phone only turns on when you're connected to a charger, or if it reboots after 5 to 10 minutes, these are key symptoms that will narrow down the search for a fault, so let's start with the simplest and gradually move on to the complex cases that require the intervention of a service center.
1. Software failures: when firmware or applications are to blame
In 60% of cases, Xiaomi’s cyclical reboot is due to software conflicts, not hardware. The first thing to check is whether you’ve recently encountered:
- 📱 Update MIUI (especially beta or switching to a new global/Chinese branch)
- 🔄 Installation of custom firmware (TWRP, LineageOS, Pixel Experience)
- 🎮 Resource-intensive games (Genshin Impact, Call of Duty Mobile)
- 🛠️ Clearing the cache/data through Settings → Memory or third-party utilities
The fastest way to diagnose this is to download it in safe mode.
- Turn off the phone (if it can boot, hold the power button for 10 seconds).
- Press the power button and reduce the volume at the same time.
- Hold until the logo appears MI, then release the power button, but keep the volume down.
- In the lower left corner, the inscription Safe mode will appear, which means that the mode is activated.
If the phone is stable in safe mode, it is the third-party app that is to blame. Uninstall the latest installed programs or reset to factory settings (Settings) → The phone. → If the problem persists, move to the next section.
After updating MIUI|When launching a specific application|Accidentally, without reference to action|Only with low battery charge|Another option-->
2. Post-update conflicts MIUI: how to roll back or fix
Updates MIUI Often, not only new features, but also critical bugs are brought in. MIUI 14.0.4 for Redmi Note 11 Pro+ a kernel failure was detected, resulting in spontaneous rebuttals upon activation 5G. And MIUI 13.0.12 for POCO F4 The problem is when using Google Pay.
If the phone starts restarting immediately after the update, try:
Check the firmware version in Settings → The phone. → Version. MIUI|Look for complaints on forums (4PDA, Xiaomi Community according to your model and version|Reverse to the previous version through Settings → Updating the system → Three points. → Select a Service Package|Reset the settings to factory (save the data in advance!)-->
How to Reverse to the Old Version MIUI:
- Download the full firmware package (not OTA!) For your model from the official Xiaomi website (choose Stable, not Developer).
- Rename the file to update.zip and place it in the root folder of the phone.
- Press the volume up. + Power to enter the Recovery Mode.
- Select Install update.zip and confirm the installation.
What if Recovery Mode doesn’t start?
Attention, rollback to the old version MIUI It can block the bootloader if you have previously unlocked it, in which case you will need to re-unblock through the official Xiaomi tool.
3.Battery problems: when the battery "cheats" the system
If the Xiaomi phone turns off at 20-30% charge and turns on only after connecting to charging, there is a 90% probability that a worn-out battery or power controller failure is to blame, POCO X3 NFC where the battery capacity falls below 70% of the nominal value.
How to check the status of the battery:
- Enter the phone code ##4636##.
- Go to the section Information about the battery.
- View parameters: Charge level (should match the indicator in the status bar) Status (if Unknown - controller failure) Temperature (above 40)°C - overheating)
| Symptoms. | Probable cause | Decision |
|---|---|---|
| The phone turns off at 15-30% charge | Battery wear (capacity < 70%) | Replacement of the battery (cost 1,500–3,000) ₽) |
| Cyclical reboot when charging is connected | Faulty power controller or cable | Checking the charger, diagnostics of the board |
| The phone is switched on only from charging, but immediately switches off. | Short circuit in the battery or power chain | Battery replacement + check-up |
| Charge jumps (for example, from 50% to 1%) | Calibration failure or sensor damage | Calibration through Engineering Mode or battery replacement |
Attention! If the battery is swelling (seen by the rear cover raised or the widening gap between the screen and the body), don't try to turn on the phone. The bloated battery may ignite! Take the device to service immediately.
4.Overheating: When the phone 'suffocates' from temperature
Xiaomi on Qualcomm Snapdragon processors (especially Snapdragon) 7xx/8xx) They're prone to heat trottling, which is forced to shut down when they overheat. 4K or charging, check it out:
- 🌡️ Processor temperature (applications) CPU Monitor AIDA64)
- 🔥 Thermopaste status (relevant for models over 1.5 years old)
- 🔌 Charger (non-original power supplies can overheat the controller)
How to lower the temperature:
- Remove the case (especially silicone or with metal inserts).
- Limit it. FPS in games through settings → Special facilities → Optimizing games.
- Turn it off. 5G (If not used, in settings → SIM-maps and mobile networks.
- Check background processes: Some apps (like Facebook or TikTok) load the processor even when it’s rolled up.
If the temperature is above 60°C in plain is a critical signal. Possible causes:
- 🔋 Bloated battery (presses on board, worsening heat sink)
- 🛠️ Dried thermopaste (requires replacement in the service)
- 🔌 Short circuit on board (often after falling or getting moisture)
💡
If the phone turns off at a temperature above 50°C is damage protection. Ignoring the problem can cause the components of the board to burn out (especially in areas of the processor and memory module).
Hardware malfunctions: from oxidized contacts to burnt-out board
If the software methods didn't work, the problem is the hardware. Consider the typical cases for Xiaomi:
(a) Damage to battery plume or power button
Symptoms:
- The phone turns off when you press the body (for example, in the area of the camera).
- Reboot occurs when you connect headphones or charge.
- The power button will be triggered or triggered once.
Solution: Disassembly and check of contacts. 30% of cases helps with the soldering of the plume or change of the button (cost 800-1 500) ₽).
(b) Memory module malfunction (eMMC/UFS)
If the phone is loaded to the logo MI and turns off or reboots cyclically with the E:Can't mount error /data — It's a common problem for Redmi. 9A/9C and POCO M3 Because of cheap eMMC chips.
Diagnosis:
- Connect your phone to your PC and check through ADB: adb shell smartctl -a /dev/block/mmcblk0
- If the conclusion contains errors Reallocated_Sector_Ct or Current_Pending_Sector — memory damaged.
Solution: Replacement of memory chip (3000-6000) ₽) or replacement of motherboard.
(c) Short circuit (SK) on board
Symptoms:
- The phone is heated even when it is turned off.
- When connected to a charger, the connector sparks USB-C.
- The battery is discharged in 1-2 hours without load.
Attention! CC can cause the board to burn, and if the phone smells like a burn, or if you see blackened areas on the board, don't turn it on and contact the service.
6. Moisture intrusion: latent corrosion
Even if the phone hasn't sunk, humidity or condensation (like after a cold) can cause contacts to oxidize. Xiaomi doesn't have official protection by standard IP68, That's why I'm so excited about the Redmi Note 12 Pro.+ marked IP53 humidity-prone.
How to check:
- Get the tray. SIM-Check the stains and see if they are broken or not).
- Light a flashlight on the board: oxidized contacts will be green or white.
- Check the moisture indicator (usually under the battery or on the tray) SIM) — If it is red, it has contact with water.
What to do:
- 🚫 Do not dry your phone with a hair dryer or rice – it will speed up corrosion.
- 🔧 Take to the service for ultrasonic cleaning (cost 1000-2 500) ₽).
- 🔋 If you have recently been moisture-injected (within 24 hours), turn off your phone and put it in a silica gel bag (from a shoe box) for 48 hours.
If after getting moisture, the phone turns on, but does not load beyond the logo, eMMC contacts are most likely oxidized or PMIC (In this case, only professional cleaning will help.
7. Conflicts with custom firmware and Magisk
If you've installed TWRP, Magisk or custom core (e.g. Kirisk for the POCO F3), Cyclical reboot may be associated with:
- 🔧 Incompatibility of the kernel with the version MIUI.
- 🔒 Magisk crash (modules like Xposed or LSposed conflict with the system).
- 📦 Damage to the boot section during firmware.
How to diagnose:
- Boot in. TWRP (keep the volume up + feeding).
- Check Logistics in Advanced → Copy Log.
- E:unknown command - boot damaged. magisk: not found - Magisk. failed to mount /vendor — sectionalism.
Decisions:
- 🔄 Reflash Magisk (download the latest version from GitHub and install via TWRP).
- 🗑️ Remove conflicting modules in Magisk → Modules.
- 📥 Sweat the stock core for your model (look for the 4PDA).
If, after the manipulation, the TWRP The phone stopped turning on at all (black screen, no vibration), maybe the recovery partition is damaged.
8.When to contact the service: signs of serious breakdowns
If you’ve tried all the methods in this article, but the Xiaomi phone still turns on and off, it’s time to turn to the experts.
- 🔥 Phone heats up to 70°C+ (c) the risk of fire (the risk of fire).
- 💥 When connected to charging, the connector sparks or the smell of burning is heard.
- 🔋 The battery swelled (sees the deformed body).
- 📵 Phone is not defined by PC (even in Fastboot).
- 🔄 Cyclical reboot is accompanied by artifacts on the screen (strips, flickering).
The cost of repair in the service (average prices in Russia, 2026):
| Problem. | Cost (₽) | Date(s) |
|---|---|---|
| Battery replacement | 1 500–3 000 | 1 |
| Cleaning the board from oxidation | 1 000–2 500 | 1–2 |
| Replacement of power plume/button | 800–1 500 | 1 |
| Smearing a memory chip (eMMC/UFS) | 3 000–6 000 | 2–3 |
| Replacement of motherboard | 5 000–12 000 | 3–5 |
How to choose a service:
- 🔍 Check reviews on Yandex.Maps or 2GIS (look for mentions of your model).
- 🛠️ Ask if they have a soldering station for chips (not all services are taken for soldering eMMC).
- 📋 Ask for a diagnosis with photos of damaged components (this is free in most services).
Attention, if they offer to "sweep your phone for 500" ₽» without diagnosis, it's a fraud. First, there's a hardware malfunction, and then there's a firmware.