Xiaomi smartphone is constantly rebooting: causes and solutions

Why Xiaomi’s smartphone can spontaneously reboot?

If your Xiaomi suddenly reboots for no apparent reason, it’s not only annoying, it’s also a signal of possible problems, and this behavior can be caused by software failures and hardware problems, and in most cases, the problem can be solved on its own without resorting to expensive repairs.

Spontaneous rebukes are often associated with processor overheating, application conflicts, or damaged firmware. However, in rare cases, a faulty battery or motherboard may be the cause. In this article, we will look at all possible causes and give step-by-step instructions for eliminating them, from simple methods to radical measures.

1. Overheating as a cause of spontaneous reboots

One of the most common causes is overheating. Xiaomi smartphones (especially models with Snapdragon 8xx or MediaTek Dimensity processors) are prone to heat up under intense loads. If the temperature exceeds 60-65°C, the system forcibly reboots the device to prevent damage to components.

How to check the temperature? Install the AIDA64 or CPU Monitor app and monitor the readings in Sensors → Temperature. Normal CPU values:

• 📱 In plain: 30-40°C
• 🎮 When playing/video: 45–55°C
• ⚠️ Critical zone: 60°C and above.

What to do if overheating is confirmed?

• 🛑 Close all background apps (especially games and social media).
• 🔄 Remove the cover – it can block heat transfer.
• 🌡️ Do not use your smartphone in the sun or near heat sources.
• 🔋 Avoid fast charging in hot conditions.

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If overheating occurs even in a simple, check if the battery is not swollen. To do this, carefully press the back cover - if it "plays" or bulges, the battery must be replaced urgently.

2. Application conflicts and “heavy” processes

Incorrect applications can cause critical errors in the system, leading to a reboot, most often the culprits are:

• 🎮 Games with aggressive optimization (e.g. Genshin Impact, PUBG Mobile).
• 🤖 Root-access applications or modified APK.
• 📱 System launchers (e.g, POCO Launcher or HyperOS Launcher).
• 🔄 Auto-Updates from Google Play or Mi App Store.

How to identify a problem application?

1. Go to Settings → Applications → Application Management.
2. Sort the list by Battery Use or Operating Time.
3. Remove or disable suspicious programs.
4. Check the device in Safe Mode (press the power button → Safe Mode). If the reboots have stopped, it is the fault of third-party software.

⚠️ Note: Do not remove system applications called com.android. or com.qualcomm. – this may cause the device to fail completely.

3. Problems with firmware and updates

Unstable versions of MIUI or HyperOS are a common cause of spontaneous reboots, especially after major upgrades (e.g., switching from MIUI 13 to HyperOS 1.0).

• 🔄 Reboots occur at regular intervals.
• 📱 On the lock screen appears a notification "System Updated".
• 🛠️ Error logs (viewed through the MTK Engineer Mode has a record of "system_server crash".

Decisions:

1. Reverse to stable version: Download the official firmware from the Xiaomi Firmware website and run through Fastboot or Recovery.
2. Cache Cleanup: Go to Settings → Memory → Clear cache.
3. Reset: If the problem persists, perform a hard reset (click Volume Up + Power → Wipe Data).

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If the reboots started immediately after the update, don’t wait for the next patch — roll back to the previous version.

4. Faulty battery or power supply

A worn-out battery is one of the most insidious causes.

• 🔋 The phone turns off at 20-30% charge and only turns on from charging.
• 🔌 Reboots occur when the charger is connected / disconnected.
• 📉 AccuBattery shows battery health below 80%.

How do I check the battery?

1. Install AccuBattery or Battery Guru and see the Battery Health setting.
2. Check if the battery is swelling (take care of the back cover).
3. Connect the original charger – if the reboots have stopped, the problem is the power supply.

⚠️ Warning: If the battery is swelling, you can't keep using it, it could cause fire.

5. Hardware malfunctions: what breaks most often

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

• 🔌 Oxidation of battery contacts - leads to unstable power supply.
• 🛠️ Damage to the motherboard (often after falls or moisture hits).
• 📡 Faulty module Wi-Fi/Bluetooth — It can cause conflicts with the processor.
• 🔋 Short circuit in the power chain - the most dangerous, requires urgent repairs.

How to diagnose a hardware problem?

• 🔍 Check the charging connector for oxidation or dirt.
• 💧 Check the moisture indicators (small white circles under the lid) – if they are red, the device has come into contact with water.
• 🔊 Listen, does not appear any extraneous noise (squeaking, crackling) when you press the case - this may indicate damage to the board.

If you suspect a hardware malfunction, you should contact a service center. Self-repair without experience can aggravate the problem. The average cost of diagnosis in official Xiaomi services is 500-1000 ₽.

6. Radical Methods: When Nothing Helps

If all previous methods have not worked, radical measures remain:

• 🔄 Fastboot Flash: Complete system reinstallation with all partitions cleaned.Instructions for using the Mi Flash Tool.
• 🧹 EDL-Emergency Download Mode: Used to restore bricks, requires an authorized Xiaomi account and cable EDL.
• 🔧 Motherboard replacement: Last resort if diagnosis shows chipset or memory malfunction.

Before resorting to these methods, back up all data through Mi PC Suite or Google Account. In case of a failed firmware, the device can turn into a “brick” (do not turn on at all).

7.Prevention: How to Avoid Spontaneous Reboots in the Future

To minimize the risk of repeated failures, follow these guidelines:

• 🔋 Use original chargers and cables.
• 📱 Clean cache and junk files regularly (via Settings) → Memory or CCleaner).
• 🔄 Do not install beta versions of firmware unless you are ready for bugs.
• 🛡️ Avoid root rights and modified recapaveres (e.g., root rights, TWRP), If you are not sure of your actions.
• 🌡️ Watch the temperature – do not play heavy games when charging.

It is also useful to disable auto-update apps in Google Play and Mi App Store to avoid conflicts after updates.

Settings → Applications → Application Management → Google Play Store → Auto Update → Never

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Regular maintenance (cleaning of dust, replacing thermopaste in the service) prolongs the life of the smartphone by 20-30% and reduces the risk of overheating.

FAQ: Frequent questions about Xiaomi reboots