Xiaomi phone itself is rebooting: what to do in 2026

If your Xiaomi smartphone (be it Redmi Note 12, POCO X5 or flagship Xiaomi 14) has started spontaneously rebooting, it’s not just annoyance, but a signal of malfunctions. This behavior can indicate both software failures and hardware problems, with the latter often requiring the intervention of a service center. But before carrying the phone for repair, it is worth checking all possible causes yourself.

In this article, we will discuss the 7 main causes of spontaneous reboots Xiaomi, from banal overheating to damaged firmware, and give step-by-step instructions for diagnosis and troubleshooting. We will focus on models with Snapdragon and Mediatek processors, as their behavior in crashes may differ, you will find a table with typical symptoms and solutions, and at the end - answers to frequent user questions.

1.Overheating: Why Xiaomi is turning off and rebooting

One of the most common causes of spontaneous reboots is overheating of the processor or battery. Xiaomi (especially models with Snapdragon 8 Gen 1/2 chips) are prone to thermal throttling, and at critical temperatures, the system forcibly restarts the device to prevent damage.

How to check:

• 🔥 Install the app AIDA64 or CPU Monitor and monitor the temperature of the processor in real time.°C in plain, up to 60-70°C under load. If the values are greater than 80°C is critical.
• 🤒 Check if the battery is swelling (carefully press on the back cover - if there are bulges, immediately carry to the service).
• 🌡️ Run a heavy game (like Genshin Impact) for 10-15 minutes – if the phone reboots, the problem is definitely overheating.

Decisions:

• 🧊 Remove the case (especially silicone) - it worsens the heat sink.
• 🔄 Limit background processes in Settings → Annexes → Auto-start.
• 🛠️ Replace the thermopaste (relevant for models over 2 years old) for 800-1500 ₽.

⚠️ Note: If the phone only reboots when charging, the problem may be in the power supply or cable. Try charging the device with another adapter (preferably the original Xiaomi on the phone). 33W or 67W).

2. firmware failures: MIUI to blame in 30% of cases

MIUI (especially versions 13-14) is known for bugs that lead to random reboots, most often after:

• 📱 Updates by air" (OTA), If the firmware files are downloaded with an error.
• 🔄 Manual resetting of settings through Settings → The phone. → Resetting settings.
• 🛠️ Custom firmware installations (e.g. Pixel Experience or LineageOS).

How to diagnose:

1. Check out the MIUI version in Settings → About Phone → MIUI version. If it ends in.0.1 or.0.2, it’s a “raw” build prone to bugs.
2. Go to Settings → Memory → Clean up and see if the System Cache section is full (more than 1 GB is an alarming sign).

Decisions:

Clear the cache through Recovery|Reverse the update MIUI|Fastboot phone search via Fastboot|Reset the settings to factory-->

The most reliable way is to reset the cache through Recovery:

1. Turn off the phone.
2. Press Volume Up + Power before the Mi logo appears.
3. Select Wipe & Reset → Wipe Cache (Change of Volume buttons).
4. Reset the device.

⚠️ Warning: If the phone has been stuck on the Mi logo for more than 10 minutes after the cache is reset, this is a sign of damaged firmware. You will need a full flashing through the Mi Flash Tool (instructions in the next section).

3. Damaged firmware: when you need firmware reflashing

If the Xiaomi smartphone reboots cyclically (turns on → turns off → turns on again) or hangs on the logo, most likely, the system firmware is damaged.

• 🔌 Failed Air Update (OTA).
• 🛠️ Interrupted firmware via Fastboot or Recovery.
• 📱 Installations of unofficial modifications (for example, Magisk or Xposed).

Critical sign: the phone does not load beyond the Mi logo, but is determined by the computer in Fastboot mode (Fastboot on the screen), in which case only a complete firmware reflash will help.

Instructions for firmware through the Mi Flash Tool:

1. Download the official firmware for your model from en.miui.com (choose the Fastboot version).
2. Unpack the archive in a folder without Cyrillic characters (for example, C:\Xiaomi\proshivka).
3. Install the Mi Flash Tool and Qualcomm drivers (for Snapdragon) or Mediatek (for Helio/Dimensity chips).
4. Connect your phone in Fastboot mode (click Volume Down + Power), launch the Mi Flash Tool and select the folder with the firmware.
5. Press Flash and wait until the end (the process will take 5-15 minutes).

4. Battery problems: when to replace

If a Xiaomi phone reboots at low battery charge (e.g., 15–30%) or shuts down even at 50%, the battery is almost certainly the problem. Over time, lithium-polymer batteries degrade, and their real capacity drops by 30–50% of the nominal capacity.

How to check the status of the battery:

• 📊 Install AccuBattery and see Battery Health if it's below 80%, the battery needs to be replaced.
• 🔋 Settings menu → Battery → Battery status check the charging cycle. If the value exceeds 500 cycles, the capacity drops critically.
• 🔌 Connect your phone to charge and move the cable. If the device reboots, the problem is the connector. USB-C power-controller.

Decisions:

• 🔄 Calibrate the battery: completely discharge the phone, then charge to 100% without interruptions.
• 🛠️ Replace the battery in the service (cost for Redmi Note 10–12: 1500–2500) ₽).
• ⚡ Use only the original Xiaomi power supplies (powerful). 18W Cheap charging can damage the power controller.

⚠️ Warning: If the phone is swollen (the back cover is moving away from the body), don't try to turn it on - it's dangerous! Lithium polymer batteries can ignite if damaged. Take the device to service or dispose of it.

5. Application conflict: who is to blame and what to do

Sometimes spontaneous reboots cause the application side, especially:

• 🎮 Games with aggressive optimization (PUBG Mobile, Call of Duty).
• 🔒 Antiviruses (Avast, Dr.Web) or optimizers (Clean Master).
• 📱 Root-access applications (Lucky Patcher, GameGuardian).

How to find the culprit:

1. Start your phone in Safe Mode (Plug Power → Long tap on Turn Off → Safe Mode) If the reboots stop, the problem is with third-party software.
2. Check the error logs via ADB: adb logcat | grep -i "crash\|reboot\|error" In the output, look for application names before the lines with FATAL EXCEPTION.

Decisions:

• 🗑️ Remove suspicious apps (especially those that request superuser rights).
• 🔄 Turn off auto-run for unnecessary programs in Settings → Annexes → Auto-start.
• 🛡️ Update Google Play Services and MIUI Security to the latest versions.

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If the phone reboots when connecting to Wi-Fi or a mobile network, try resetting the network settings in Settings. → SIM-maps and mobile networks → Resetting network settings.

6. Hardware malfunctions: when without service can not do

If all software methods have been tried and the Xiaomi phone is still rebooting itself, the problem may lie in the hardware:

How to diagnose hardware problems:

• 🔍 Check the phone for vibrations or foreign sounds (such as rattling speakers.
• 🌡️ If reboots occur when physically pressing the body (for example, in the area of the camera), a plume may break.
• 📡 Use test software like Phone Doctor Plus to test sensors and modules.

⚠️ Note: If Xiaomi phone reboots only when the headphones are connected, the problem may be in the audio codec (Qualcomm chip). WCD9340/9341). In this case, only the soldering of the chip in the service will help.

Other reasons: from SIM-maps before magnetic storms

Sometimes the source of the problem is external factors, which users do not know:

• 📶 Problems with SIM-Card: If the phone is rebooted when calling or SMS, try to replace SIM to another or to move it to another slot.
• 🌍 Geomagnetic storms: During solar activity (you can track it on the TESIS website) electronics can behave unstable.
• 🔋 Poor-quality charger: Cheap power supplies without protection can cause voltage surges leading to rebuttal.
• 📡 Wi-Fi router conflict: If reboots only occur at home, try changing your Wi-Fi channel in your router settings (from Auto to 6 or 11).

Exotic case: Some Xiaomi users have encountered rebuttals due to the enabled developer mode with the activated option Do not turn off the screen. If you have this mode on, check the settings in Settings → Additional → For developers.

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If the phone is rebooted only in a specific location (such as at work or in the subway), the problem may be interference from the equipment (such as powerful transformers or radio transmitters).

FAQ: Frequent questions about Xiaomi's spontaneous reboots