Xiaomi is constantly rebooting: all the reasons and what to do

You took the Xiaomi Redmi Note 12 or the POCO X5 Pro, and it suddenly turned off and started to boot again, without you being involved. It happens once an hour, when you start games or even during a conversation. Why does it happen? There are more than a dozen reasons, from a harmless MIUI malfunction to a critical motherboard malfunction. In this article, we'll take a look at all possible scenarios, learn how to distinguish software bugs from hardware breakdowns, and give clear instructions on what to do in each case.

It's important to understand that spontaneous reboot is not a diagnosis, it's a symptom. For example, Xiaomi 11T Pro often has this problem because of overheating of the Snapdragon 888 processor, and the budget Redmi 9A because of a bloated battery. We won't advise "just reflash the phone" or "reset it to factory settings" - instead, we will offer a systematic approach with the diagnosis of each component. Let's start with the simplest and most obvious reasons that you can fix yourself, and get to cases that require the intervention of the service center.

1. Software glitches: MIUI, applications and updates

Software is not the fault in 60% of cases. MIUI (especially in versions 13-14) is known for its memory and power management bugs. If the phone reboots regularly but without any apparent pattern (for example, not when loading or charging), check these points first:

• 📱 Failed update MIUI: After installing the new firmware version, many users of Xiaomi 12 and Redmi Note 11 faced “endless rebukes”, most often due to the conflict of the core of the system and drivers.
• 🤖 Google Services (especially Google Play Services) can cause critical CPU overload if their cache is corrupted or the version is outdated.
• 🎮 Games and heavy apps: Genshin Impact, PUBG Mobile or even TikTok can cause overheating and emergency reboots due to restrictions. MIUI heat-throttle.
• 🔄 Background conflict: If optimizers (e.g., Xiaomi Security) and third-party boosters (e.g., CCleaner) are running simultaneously, they can hang on to each other.

How to diagnose a programmatic cause?

1. Run your phone in Safe Mode (hold the power button → long tap on "Stop" → "Safe Mode"). If the reboots stop, the third-party app is to blame.
2. Check the error logs: go to Settings → About Phone → MIUI version (tap 5 times according to version to activate developer mode), then open Settings → Additional → Developer → Error Logs.
3. Remove the system application cache: Settings → Applications → Application management → Three points → Show system → Google Play Services / MIUI System → Storage → Clear the cache.

2.Overheating: when the phone "chokes"

Xiaomi with Snapdragon 8 Gen 1/2 processors (such as Xiaomi 12 Pro or Black Shark 5) are prone to overheating due to aggressive overclocking policies. If the phone gets hot (above 45°C) and turns off, it's a safety mechanism, not a breakdown. But the constant reboot when loaded suggests that the cooling system is not coping.

How do you check the temperature?

• Install the AIDA64 or CPU Monitor app and watch the heating schedule of the CPU cores.
• If the temperature is above 60°C for simple tasks (like watching YouTube), it is not normal.

Causes of overheating and solutions:

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If the phone overheats when charging, try using Xiaomi’s original Quick Charge 3.0/4.0 power supply. Cheap charging can deliver unstable voltage, causing the power controller to overheat.

3. Battery problems: bloating, wear, short circuit

The battery is the most vulnerable component of a smartphone, and after 500 to 800 charging cycles, its capacity drops by 20 to 30 percent, and internal resistance increases, which leads to:

• 🔋 Sudden shutdowns at a charge level of 20-30% (phone "lies" about the percentage of charge).
• ⚡ Reboots when charging is connected (if the battery controller is unable to handle the current).
• 💥 Bloating (visually visible on the "bloated" body or raised screen).

How to check the status of the battery?

1. Type ##4636## into your phone number, select "Battery Information." If the status is "good" but the capacity is very different from the passport, the battery is worn out.
2. Use the AccuBattery app to monitor real capacity and charging current.
3. Illuminate a flashlight at the junction of the screen and the case - if a gap or warping is visible, the battery is swelled.

If the battery is swollen, immediately turn off the phone and do not use it until the battery is replaced.In Xiaomi after 2020, the batteries are soldered to the board, so replacing requires special equipment.

4. Failures in the work of the motherboard and memory

If the phone reboots with specific actions (such as connecting headphones, launching the camera, or copying files), the problem may lie in:

• 🧠 Memory malfunctions (RAM): Defective memory chips lead to blue screens (in Android, this is called kernel panic) and instant reboot.
• 💾 Flash memory damage (eMMC/UFS): If the phone reboots while writing files or installing apps, storage sectors may be damaged.
• 🔌 The sliding plume: in Xiaomi Mi 11 and POCO F3 Often the battery or display plume departs, resulting in power loss.

How to diagnose hardware problems?

1. Run a memory test using MemTest86 (requires an unlocked bootloader and a custom TWRP recavator).
2. Check the integrity of the file system through ADB: adb shell e2fsck -f /dev/block/mmcblk0p1 (replace mmcblk0p1 to your partition, check with adb shell mount).
3. Check the fee for chips, oxidation or burnt elements (requires disassembly).

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If the phone reboots when connecting to a computer or charging, check the USB-C port for physical damage. Xiaomi often breaks power contacts, leading to unstable voltage and crashes.

5. Conflicts after firmware or unlocking the bootloader

Fans of custom firmware (LineageOS, Pixel Experience) and unlock bootloaders often encounter "bootloop" - an endless reboot.

• 🔓 Improperly unlocked bootloader: If you don’t wait for the unlock timer to end (72–168 hours), the phone may get stuck on the Mi logo.
• 📦 Incompatible firmware: Installation MIUI Redmi Note 10 on Redmi Note 10 Pro (different model encodings: mojito vs sweet).
• 🔄 Damaged boot section: If you interrupt the process when you run through Fastboot, the phone will stop loading.

How do I get out of the bootloop?

1. Boot to Fastboot (keep Volume Down + Power) and run the original firmware through the Mi Flash Tool.
2. If the phone boots to the logo and reboots, try resetting the settings via Recovery (Loud up + Power → Wipe Data).
3. For custom firmware, check compatibility with your model on the XDA Developers or 4PDA forum.

Check the phone model in Settings → About Phone → Model | Download the firmware only from the official Xiaomi website or verified sources | Charge the phone at least 50% | Disable the antivirus on your PC (it can block the Mi Flash Tool) | Save important data (firmware erases user files)

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External factors: charging, SIM-map, antennae

Sometimes the reason is not in the phone, but in the periphery:

• ⚡ Poor power supply: Cheap charging can deliver power surges that trigger protection and reboot the phone.
• 📶 Problems with SIM-Card: If reboots occur during calls or SMS, Maybe the chip's damaged. SIM slot.
• 📡 Conflict with the network 5G: Xiaomi. 12S Ultra and Redmi K50 There were bugs with the Snapdragon modem X65, which caused the failure of the connection to 5G.

How do you check?

1. Try charging your phone from another power supply (preferably the original one).
2. Extract. SIM-Map and check if the reboots are still ongoing.
3. Turn it off. 5G in settings: Settings → SIM-maps and mobile networks → Type of network → 4G/3G/2G.

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If the phone reboots when connecting to Wi-Fi, reset your network settings: Settings → Wi-Fi → Additionally. → Network management → Delete all networks. Sometimes conflict arises because of incorrect networks. DHCP-router settings.

7. When to contact the service center?

If you've tried all of these, but the phone is still restarting, it's probably a hardware problem.

• 🔧 The phone does not turn on or load only to the Mi logo.
• 🔥 On the board, burnt elements or traces of oxidation are visible.
• 📉 Diagnosis shows critical memory error (e.g., E:Unable to mount) /data recover).
• 🔋 The battery is swollen or the phone shuts down when the charge level is above 50%.

The cost of repairs in official Xiaomi services (for 2026):

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If your Xiaomi is warranty-worthy, don't try to repair it yourself! opening the case or firmware through Fastboot will void the warranty. Contact an authorized service center with a check.

FAQ: Frequent questions about Xiaomi reboots