Xiaomi phone itself reboots: reasons and solutions [2026]

If you have a Xiaomi smartphone (be it Redmi Note 12 Pro)+, POCO X5 or even the flagship Xiaomi 14 Ultra has started spontaneously rebooting for no apparent reason — not just annoying, but a signal of possible problems, behavior that could indicate problems with firmware, hardware components or even external factors (such as overheating). In 80% of cases, the cause can be eliminated independently without resorting to a service center.

In this article, we’ll look at all the possible causes, from a simple system failure to serious board defects, and give step-by-step instructions for diagnosis and repair. Particular attention will be paid to Xiaomi models on Qualcomm Snapdragon and MediaTek processors, because their behavior during reboots can be radically different, if you notice that the phone reboots only when charging, during games or when battery charge is low, these are narrow symptoms that require specific solutions.

1. Diagnostics of the problem: when and how Xiaomi is rebooted

Before you start repairing, record the symptoms.

• 🔄 Reboot occurs cyclically (e.g. every 5 minutes) or spontaneously?
• 🔋 Is the problem related to the charge level (e.g., at 20% or charging connection)?
• 🎮 Does it fail during loading (games, video shooting, multitasking)?
• 🌡️ The phone is heated before restarting?

These details will help narrow down the possible causes, such as if Xiaomi reboots only when connected to charging, either the cable/power supply or the charge controller on the motherboard is to blame. 15-30% The charge is likely to be worn out by the battery or the settings are lost MIUI feed-management.

For accurate diagnosis, use the hidden menu of engineering tests (works on most Xiaomi models):

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. Go to the Battery Information section and check the Charge Level, Temperature and Condition settings.

Programmatic causes: failures MIUI and firmware

In 60 percent of cases, spontaneous reboots are caused by software errors.

• 📱 Update failure MIUI (fault-fix OTA-packet).
• 🧹 Application conflict (especially root or modified rights) APK).
• 🔄 Damage to system files (for example, after a failed resetting of settings).
• 🛠️ Custom firmware (if you have installed LineageOS, Pixel Experience, etc.).

The first thing you need to do is check the version. MIUI and availability of updates:

1. Go to Settings → About the phone → System update.
2. If you have an update, install it. If the phone reboots while you boot it. OTA, Download the full firmware package (.zip) from the site MIUI Downloads and install through Recovery.

If the update didn’t help, try resetting the settings to factory:

1. Create a backup of the data (via Settings) → Additionally. → Backup).
2. Go to Settings → About the phone → Reset settings.
3. Select Erase All Data (not Reset!).

⚠️ Warning: If the phone does not turn on or hovers on the logo after resetting MI, This is a sign of damage to the system partition, and you'll need to run the Fastboot firmware using the Mi Flash Tool.

3. Hardware malfunctions: battery, board, contacts

If the software methods didn't work, the problem is the hardware.

To check the status of the battery without disassembly:

1. Install the AccuBattery app (available on Google Play).
2. If you look at the graph, Battery Health, if it's below 80 percent, it's time to change the battery.
3. Pay attention to the temperature during charging – if it exceeds 45°C, it's an anomaly.

If you suspect problems with the motherboard (for example, after a fall or moisture), examine it for:

• 🔍 Bloated capacitors (especially near the processor).
• 💧 Traces of corrosion (green plaque on the tracks).
• 🔥 Darkening (signs of overheating).

⚠️ Warning: If the phone falls into the water, even after drying, corrosion can occur after months, in which case ultrasonic cleaning of the board in the service is required.

4. Application conflicts and background processes

Sometimes applications are the cause of reboots, especially those that:

• 📲 Have root rights or ADB.
• 🔄 Use auto-run and work in the background (for example, optimizers or antiviruses).
• 🎮 Requires high performance (games, video editors).

To identify the culprit:

1. Launch your phone in Safe Mode (hold the power button) → Safe regime).
2. If the reboots stopped, the problem is with third-party software.
3. Remove the recently installed apps, starting with the most suspicious ones.

Pay particular attention to:

• 🛡️ Antivirus (Avast, 360 Security) - known conflicts with the security system MIUI).
• 📊 Optimizers (Clean Master, DU Speed Booster).
• 🎮 GameGuardian, Lucky Patcher).

💡

If the phone reboots when you open a particular app (like TikTok or Genshin Impact), try clearing its cache: → Annexes → [Name of name] → Memory. → Clear the cache.

5.Overheating and cooling: why Xiaomi is turning off the heat

Xiaomi (especially Snapdragon processor models) 8 Gen 2/3) They're prone to overheating, which leads to emergency reboots. 40-45°C. If the phone gets hotter, the protection is triggered.

Causes of overheating:

• 🔥 Games or heavy tasks (video rendering, AI-function).
• ☀️ External conditions (direct sunlight, heat in the car).
• 🔋 Charging. + load (for example, playing while charging).
• 🧊 Cooling system malfunction (dried thermopaste, broken cooler in Black Shark).

How to lower the temperature:

1. Turn off background processes in Settings → Annexes → Auto-start.
2. Activate the Performance Mode → Battery (limits heating).
3. Use a cooling case or stand with a fan.
4. If it's a phone POCO F5 or Redmi K60 — check the operation of the fan (at intense load it should be turned on).

💡

If the phone only reboots in the summer or in a stuffy room, the problem is overheating, and the solution is to avoid direct sunlight and not load the device while charging.

6. Charging problems: cables, power supplies, ports

If Xiaomi reboots when connected to charging, blame:

• ⚡ Unoriginal cable/power supply (especially cheap Type-C without Quick Charge support).
• 🔌 The polluted port USB-C (dust, debris, oxidation).
• 🔋 Faulty charge controller on the motherboard.

How to check:

1. Try another original cable and power supply (e.g. from Xiaomi) 67W).
2. Check the port. USB-C For damage (bent contacts, garbage) Clean it with a toothpick or compressed air.
3. If the phone only reboots when wirelessly charging, the problem is in the Qi module.

For Redmi Note models 11/12 and POCO X4 chip-problem U2401 (If you're charging, you turn off the phone and don't turn on until you disconnect the cable, that's a sign of a malfunction. ~1500-3000 ₽).

7. Service centers and warranty: when to contact specialists

If you’ve tried all the methods, but Xiaomi is still restarting itself, it’s time to contact the service.

• 📄 Warranty card (if the phone is warranty, repairs can be free of charge).
• 💰 The cost of diagnosis (in official Xiaomi services - from 500) ₽).
• ⚙️ Difficulty of failure (replacement of battery) ≈ 1000-2000 ₽, ration ≈ 3000-8000 ₽).

Official Xiaomi service centers in Russia:

• 📍 Moscow: 10 Letnikovsky St. (Mi Service service).
• 📍 St. Petersburg: Marshal Govorov str., 35.
• 📍 Regions: addresses on the site mi.com/ru/service.

Before the service visit:

1. Make a backup of your data (via Mi Cloud or Google Account).
2. Delete personal photos and passwords (if the phone is unlocked).
3. Write down the IMEI (on the box or in Settings → About the phone).

⚠️ Warning: If the phone has been unlocked by a bootloader or stitched with custom firmware, the official service may refuse warranty repairs.

8.Prevention: How to Prevent Reboots in the Future

To avoid repeated failures, follow the recommendations:

• 📲 Update regularly MIUI (But don't install betas unless you're sure).
• 🔋 Use original chargers (especially for Quick Charge 4 models)+).
• 🧹 Clean cache and garbage once a month (via Settings) → Memory).
• 🌡️ Avoid overheating (do not play heavy games when charging).
• 🛡️ Don't identify suspicious APK source.

For models with AMOLED-screens (Xiaomi) 13T, Redmi K50) recommended:

• 🖥️ Turn off automatic brightness (it can cause lags).
• 🌙 Use a dark theme to reduce the load on the screen.

💡

If your Xiaomi is older than 2 years, replace the battery prophylactically - even if it still holds a charge. A worn-out battery not only causes reboots, but can damage the board if it swells.

FAQ: Frequent questions about Xiaomi reboots