Why Xiaomi is rebooting on its own: a full analysis of the causes and solutions

Your Xiaomi (or) Redmi/POCO) Is it that it suddenly reboots for no apparent reason? The problem is familiar to many owners of smartphones of this brand - from the budget Redmi Note 12 before the flagship Xiaomi 14 Ultra: Spontaneous reboots are not only annoying, but also signal possible malfunctions - from software failures to hardware breakdowns.

In this article, we will systematically analyze all the reasons why a phone can go into a cyclical reboot, from banal overheating to critical firmware errors, you will learn how to diagnose a problem without visiting a service center, what settings to check first, and when it really is time to carry the device for repair. And for advanced users, we have prepared instructions on how to work with fastboot and system logs.

Spoiler: 60 percent of the time, you can solve the problem yourself in 10 to 30 minutes, and let's start with the simplest one.

1.Overheating: Why Xiaomi is switching off and rebooting from high temperatures

The most common cause of spontaneous reboots is overheating of the processor or battery. Xiaomi (especially models with Snapdragon chips) 8 Gen 2/3 or Dimensity 9000+) They are prone to heat throttling, and when they reach a critical temperature (usually a temperature of the temperature). ≈50–55°C for CPU or ≈45°C for battery) the system forcibly restarts the device to prevent damage to components.

How to check:

• 🔥 Tactile: The back of the phone is hot (especially in the camera/chip area).
• 📊 Through Settings: Go to Settings → Battery → Battery status (on some models path: Settings) → The phone. → Battery status).
• 📉 Monitoring applications: install CPU Monitor AIDA64 To track temperature in real time.

Typical overheating scenarios:

⚠️ Warning: If the phone reboots at temperatures below 40°C, the problem could be a faulty thermal sensor or a damaged thermal paste on the chip, which requires disassembly of the device.

Firmware failures: bugs MIUI and unstable updates

Software errors are the second most common cause of spontaneous reboots, especially for devices on the computer. MIUI 14/15, where reboot bugs were recorded massively after the updates:

• 🔄 The phone is rebooted at regular intervals (e.g. every 15-30 minutes).
• 📱 Reboot occurs when opening specific applications (camera, gallery, instant messengers).
• 🔧 After the reboot, a notification “System application” appears UI stopped".

How to diagnose:

1. Check the firmware version: Settings → About phone → MIUI version.
2. Look for bug information for your model on forums (4PDA, XDA Developers. for example, in the Redmi Note 11 Pro+ There was a critical error with reboots after the update to MIUI 14.0.4.0.
3. Install Logcat Extreme and look at the system logs for bugs like “kernel panic” or “watchdog timeout.”

Decisions:

Remove the update through Settings → Updating the system → Three points. → Select a Service Package

Clear the cache through Settings → Memory. → Clear the cache

Reset the settings to factory (with data saving)

Install custom recovery (TWRP) and run a stable version MIUI-->

⚠️ Warning: If the phone is rebooted on the logo MI (bootloop, don't try to flash it through fastboot without backing up your data, and in 30 percent of cases, it results in a total loss of information on the internal drive.

3. Battery problems: bloating, wear, charge controller

If your Xiaomi is older than 2-3 years, the reason for the reboot may lie in a worn-out battery. Over time, lithium polymer batteries lose capacity and voltage stability.

• 🔋 The phone turns off at 20-30% charge and only turns on from charging.
• 🔄 Reboots occur when the charger is connected / disconnected.
• 📉 B Settings → Battery → Battery status shows health below 80%.

How to check the battery:

1. Visually inspect the battery (if there is access): bloating even 1-2 mm is a reason to replace.
2. Use the AccuBattery app to analyze wear. Criticals: Capacity below 80% of nominal capacity. Charging current jumps from 500 mA to 2000 mA. Battery temperature exceeds 40°C to the plain.

power-train

Decisions:

💡

If you notice that the phone has become faster to discharge and warm up when charging, try using a charger with less power (for example, a charger with less power, 10W instead 33W). This will reduce the load on the worn-out battery and delay its replacement.

4. Application conflicts and viruses

Rarely, but accurately: some applications (especially pirated or from dubious sources) can cause critical kernel errors that lead to reboots, and miner viruses (such as HiddenAds or Joker) load the processor, causing thermal rebukes.

Signs of program conflict:

• 🤖 Reboot occurs when a specific application is opened (for example, TikTok or Wildberries).
• 📱 A message appears before the reboot saying "Annex X is stopped".
• 🔍 B Settings → Annexes → All applications are unknown programs with administrator rights.

How to find the culprit:

1. Run your phone in Safe Mode (press Power, then hold down Power Disconnect until the option appears) If the reboots stop, third-party software is to blame.
2. Check the list of recently installed apps. remove suspicious ones (especially with rights) ADMIN or ACCESSIBILITY).
3. Scan the system with an antivirus (Malwarebytes or Dr.Web Light).
4. Check logs via adb logcat (for advanced): adb logcat | grep -i "fatal\|panic\|reboot"

Top.-5 Apps that cause reboots on Xiaomi:

1. UC Browser (known for conflicts with the MIUI 14).
2. Clean Master and similar "optimizers".
3. Pirate versions of Spotify, Netflix.
4. Games with modified APK (PUBG Mobile, Free Fire).
5. Applications for Automatic Clicker (AutoClicker).

💡

If the phone only reboots when connected to Wi-Fi or mobile network, the problem may be in settings. APN or DNS. Try changing the operator or resetting the network settings (Settings) → SIM-maps and mobile networks → Resetting settings).

Hardware malfunctions: from plumes to motherboard

If all the software methods have been tried and the phone keeps rebooting, it's the hardware.

Problems with plumes and connectors:

• 📱 Battery plume: oxidation or break of contacts leads to power loss.
• 🔌 Charging connector (USB-C): pollution or mechanical damage.
• 📶 Antenna plumes: can close on the body, causing short circuits.

Malfunctions of the motherboard:

• 🔥 Breakdown of capacitors (typical for Xiaomi after falls or moisture hits).
• 🔧 Memory chip dump (eMMC or UFS) — The phone is rebooted when reading/write data.
• 📡 Module malfunction Wi-Fi/Bluetooth (Broadcom chip or Qualcomm).

Iron diagnostics:

⚠️ Warning: If the phone has fallen into water or been severely impacted, do not attempt to repair it yourself.Corrode on the board may cause permanent damage 1-2 weeks after the incident.

6. Conflicts with custom firmware and root rights

If you have installed custom recovery (TWRP), Get root rights or stream unofficial versions MIUI/LineageOS, The reason for the reset may be in:

• 🔧 Incompatibility of the kernel with the firmware version.
• 🔒 Magisk module conflicts (especially Xposed Framework).
• 📱 Wrongly patched boot.img.

How to diagnose:

1. Check logs via adb logcat for type errors: E/SELinux: avc: denied { search } for pid=1234 comm="logd" name="data"
2. Turn off all Magisk modules and check for stability.
3. Test the phone with the root turned off (there is an option “Uninstall” in Magisk).

Decisions:

• 🔄 Return to the stock firmware via fastboot.
• 🔧 Update Magisk to the latest version (reboot bugs were in versions 25.0–25.2).
• 📱 Remove conflicting modules (most often to blame Riru, LSposed, ViPER4Android).

7.Problems with SIM-link-card

Rarely but accurately: defective SIM-The card or modem failure can cause reboots, especially when:

• 📶 Connection to the mobile network (2G/3G/4G/5G).
• 📞 Call or SMS.
• 🔄 Switching between networks (for example, from Wi-Fi to mobile Internet).

Diagnosis:

1. Try the second one. SIM-Card (or the same card on another phone).
2. Disconnect the mobile network: Settings → SIM-maps and mobile networks → Mobile network → Off..
3. Check the settings. APN (Incorrect parameters can cause modem failures).
4. Update the modem firmware (for advanced): fastboot flash modem NON-HLOS.bin

If the problem is in the modem hardware (Qualcomm Snapdragon chip) X55/X60 Or MediaTek Helio. M70), The symptoms will be as follows:

• The phone is rebooted when the network is lost (for example, in the subway).
• There are errors in the logs: E/QCRIL-MSGMGR: Failed to register for OEM hook
• Modem "disappears" from the system (Settings) → The phone. → Status. SIM-The card shows no service").

💡

If the phone only reboots when connected to a particular cell tower (such as at home or at work), the problem may be frequency incompatibility. 3G instead 4G/5G customized SIM-map.

8.When to contact the service: signs of critical malfunctions

If you've tried all the methods in this article, but the phone keeps rebooting, it's time to call the experts.

Urgent service if:

• 🔥 The phone is warmed off (the risk of fire!).
• 💥 Reboots are accompanied by cotton, sparks or the smell of burning.
• 📵 The phone doesn’t turn on at all (even in fastboot mode).
• 🔧 Artifacts, stripes or flickering before the reboot appear on the screen.
• 🔋 The battery swelled (seems to be on the raised back cover).

What to do before visiting the service:

1. Make a backup copy of the data (if the phone is still turned on).
2. Write down the phone model and firmware version (located in Settings) → The phone).
3. If the phone is warranty - do not open it and do not sew it yourself (this will cancel the warranty).
4. Prepare a check or box (to confirm the originality of the device).

Cost of repair (example prices for Moscow, 2026):

⚠️ Attention: if you are offered a motherboard repair for 500-1000 rubles, it is most likely a fraud. BGA-chips require special equipment (infrared station, microscope) and takes several hours.

FAQ: Frequent questions about Xiaomi reboots