Xiaomi Reboots: Reasons and Solutions (2026)

Why is Xiaomi’s smartphone suddenly rebooting?

If your Xiaomi (whether it’s the Redmi Note 12, POCO X5 or Xiaomi’s flagship 14 series) starts to spontaneously reboot, it’s not only annoying, it’s also a signal of possible problems. A spontaneous reboot can occur due to software failures (such as application conflict or damaged firmware) and hardware reasons – from a discharged battery to overheating of the processor.

In this article, we will analyze all possible causes - from banal (hung application) to serious (motherboard malfunction), as well as give step-by-step instructions for diagnosing and eliminating the problem. Particular attention will be paid to Xiaomi models of recent years, where such failures are most often encountered due to aggressive optimization. MIUI or hardware features of chips Qualcomm/Mediatek.

Before you carry your phone to the service center, try to go through our checklist - in 80% of cases, the problem can be solved independently in 10–30 minutes.

Frequently (several times a day)| Periodically (1-2 times a week)| Rarely, but accurately | Only with specific actions (games, charging, etc.)| Not yet encountered-->

1. Programmatic causes: from MIUI failures to viruses

To start with, the most common is software failure, which accounts for up to 60 percent of all spontaneous reboots, and these are the key culprits:

• 📱 Application conflict: Memory optimizers, antiviruses, or games with aggressive resource use (e.g., Genshin Impact or other games) are especially often to blame. PUBG Mobile).
• 🔄 A damaged update MIUI: If the phone began to restart after the update, the “raw” firmware is to blame.
• 🦠 Viruses or malware: Some Trojans specifically cause reboots to mask their activity.
• 🗑️ Full memory: when less than 1 GB of free space is left on the device, the system can crash.

How do you diagnose? First, check if there's a problem in Safe Mode, if it doesn't reboot, it's the third-party app's fault, and if the problem persists, we go deeper.

Launch your phone in Safe Mode|Check the free space in memory|Remove newly installed applications|Reverse the latest update MIUI (if possible)|Scan the device for viruses-->

Instructions for launching Safe Mode:

1. Turn off the phone.
2. Press the power button before the Xiaomi logo appears, then release and immediately press the volume button.
3. Hold it until the phone boots with the Safe Mode label at the bottom of the screen.

2. Hardware problems: battery, overheating, contacts

If the software methods didn't work, it's time to check the hardware. The most common hardware cause of spontaneous reboots in Xiaomi is battery wear or poor contact of its connector. The fact is that when the voltage drops below a critical level (usually ~3.2V), the phone is forced to turn off urgently, which is perceived as a reboot.

Other hardware reasons:

• 🔥 Processor overheating: especially relevant for POCO F5, Redmi K60 and other models with Snapdragon 8+ Gen 1, which warms up when loaded.
• 🔌 Oxidation of battery or motherboard contacts: Often occurs after moisture is ingested.
• 🛠️ Power button malfunction: If it is “stuck” or oxidized, the phone can falsely trigger on pressing.
• 💥 Problems with working memory (RAM): rare, but occurs when the chip is physically damaged.

Install the AIDA64 or CPU Monitor app and watch for:

• Processor temperature (normal up to 60°C under load).
• Battery voltage (should be stable, without sharp drawdowns).
• RAM (if less than 20% is free, failures are possible).

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If the phone reboots when you connect to a charger, check the cable and the power supply. Cheap accessories can give unstable voltage, which leads to failures.

3.Firmware problems: how to roll back or reinstall MIUI

If the phone started to reboot after the MIUI update, the fault is unstable firmware, which is especially true for betta versions or region-dependent builds (for example, when the global model is put on Chinese firmware).

Here's what we can do:

1. Retrace to the previous version of MIUI (if backup is available).
2. Clean firmware installation via Recovery or Fastboot.
3. Reset to factory settings (if reboots have started after installing applications).

Instructions for resetting via Recovery:

1. Turn off the phone.
2. Press Power + Volume up before the Mi Recovery logo appears.
3. Select Wipe Data → Wipe All Data (manage volume buttons, confirm – power button).
4. Reset after reset.

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Reset to factory settings deletes all data, including photos and apps. Pre-backup through Settings → About Phone → Backup!

If the reset didn't work, you'll have to go through the phone manually.

1. Download the official firmware for your model from en.miui.com.
2. Unpack the archive and place the update.zip file in the root of the phone’s memory.
3. Go to Recovery and select Install update.zip.

4.Flash-through Fastboot: A last resort

If the phone is rebooted cyclically on the logo or not turned on at all, only the firmware through the Fastboot remains, a method that works for all Xiaomi models, but requires a computer and minimal technical skills.

What you need:

• 🖥️ Windows computer (recommended) 7/10/11).
• 🔌 Cable USB (preferably original).
• 📁 Firmware in.tgz format for your model (download from the official website).
• 🛠️ The Mi Flash Tool (download here).

Step-by-step:

1. Unpack the firmware in a folder without Cyrillic characters (for example, C:\Xiaomi\proshivka).
2. Install the Mi Flash Tool and drivers (if Windows didn’t pick them up automatically).
3. Turn off the phone and press Power + Volume down to log into the Fastboot.
4. Connect your phone to your PC. Android Bootloader Interface should appear in the Device Manager.
5. In Mi Flash Tool, click Select, specify the firmware folder, then Refresh (should appear) COM-port).
6. Select Clean All mode and press Flash.
7. Wait for the end (5-10 minutes). The phone will reboot automatically.

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Fastboot removes all data, including the userdata partition. If your phone had important files, try extracting them first through ADB (if the phone is switched on at all).

5. Battery problems: how to check and replace

If the phone reboots at 20 to 40 percent charge or shuts down without warning, it's the battery that's to blame, and over time, lithium polymer batteries lose capacity and can't sustainably give off current, leading to power drawdowns.

How to diagnose:

• 📊 Use the AccuBattery app to check the battery status, and if the battery is below 70%, it's time to change it.
• 🔋 See how the phone behaves when charging: if it reboots when the cable is connected, the problem is in the power controller or the battery itself.
• 🔍 Take the phone apart (if you have experience) and check if the battery is swelling.A bloated battery is dangerous - it can ignite!

How to replace the battery:

1. Buy the original battery for your model (for example, the Redmi Note 11 will suit the BH42).
2. Plug off the back cover (a mediator and a hair dryer will be needed to soften the glue).
3. Disconnect the battery plume, then remove it (don't pull the wires!).
4. Install a new battery, plug in the plume and assemble the phone.

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If you are not sure of your abilities, you should contact the service. The cost of replacing the battery in Xiaomi is 1,500-3000 ₽ model-wise.

⚠️ Don’t use unoriginal batteries – they can not only fail quickly, but also damage the phone’s charging controller.

6.Overheating: how to prevent and eliminate

Many Xiaomi models (especially those with Snapdragon 8 Gen 1/2 processors) are prone to overheating, leading to thermal throttling, a forced performance decline or even a reboot. The normal operating temperature of the processor is up to 60–65°C, if it is higher, you need to take action.

Causes of overheating:

• 🎮 Long-term gaming sessions (especially in Call of Duty Mobile or Genshin Impact).
• 🌡️ Dust-clogging cooling system (relevant for phones over 2 years old).
• ☀️ Use in the sun or in a hot room.
• 🔄 Background activity of applications (e.g. mining bots or poorly optimized services).

How to lower the temperature:

1. Install the CPU Monitor or Game Booster app to monitor the temperature.
2. Clean the phone from dust (you can blow with compressed air or gently wipe with a cotton swab with alcohol).
3. Turn off unnecessary background processes in Settings → Applications → Auto Run.
4. Reduce the graphical settings in games (for example, in PUBG Mobile, select Balanced Mode instead of HDR).
5. Use a cooling case or fan stand (such as Black Shark FunCooler).

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If the phone is warming up even in plain, check if the mining bot is working in the background. To do this, open Settings → Battery → Battery Use and see which applications consume the most power.

7. When to contact the service center?

If you’ve tried all the methods, but the phone still spontaneously reboots, the problem may be more serious:

• 🔧 A motherboard malfunction (for example, a detached memory chip or a damaged power controller).
• 💧 Short circuit after moisture hits (even if the phone "dried out," corrosion could remain).
• 🔌 Problems with the charging connector (if reboots occur when the cable is connected).

Signs that you need to bring to the service:

• The phone restarts every 5-10 minutes, regardless of the action.
• Artifacts (strips, flickers) appear on the screen before rebooting.
• The phone does not turn on or is cyclically loaded to the logo.
• After disassembly, oxidation or damage on the board is visible.

The cost of repairs in official service centers Xiaomi:

⚠️ If the phone is warranty, don't disassemble it yourself - it voids warranty obligations.

FAQ: Frequent questions about Xiaomi reboots