Why Xiaomi smartphone reboots for a long time - all the reasons and ways to accelerate

Xiaomi has become an integral part of everyday life, but sometimes even the most reliable technology fails. One of the most annoying problems is a long reboot, when the device hangs on the Mi logo, 5-10 minutes "thinks" before turning on or refuses to turn off at all. What is the reason for this behavior? Let's say right away: it's not always the manufacturer's fault. Most often the problem lies in the software, settings or even the physical wear of components.

In this article, we will discuss 7 The main reasons why Redmi Note 10 Pro, POCO X5, Mi 11 The Ultra or another Xiaomi model can slow down when you reboot, and you can also give step-by-step instructions for diagnosing and troubleshooting, from basic steps like cleaning the cache to deep firmware manipulation, you'll find a solution to your situation. And yes, we're not going to say, "just wait" or "take to service" without an explanation, but it's just a specific step, given the nature of the shell. MIUI and hardware platform Qualcomm/Mediatek.

Note: If your smartphone doesn’t turn on after a long restart (black screen, no button response), it’s another problem — most likely due to a bootloader damage or hardware failure "[em>Xiaomi does not turn on: what to do if the phone is dead)".

1. overloaded cache of system and applications

The most common reason for reboot freezes is cache, which is divided into three types in MIUI:

• 📱 App cache – temporary program files (for example, Instagram or Telegram cache can weigh gigabytes).
• 🖥️ System cache - shell data MIUI, including graphical elements and settings.
• 🔄 Dalvik cache – optimized files to speed up Java applications (relevant for older versions of Android).

When the cache is full, the system reboots it and spends time re-indexing it and cleaning it up, and in the worst cases, it leads to an "infinite" download animation.

How do you check? Go to Settings → Memory → Cleanup and see how much space the garbage takes up. If the number is above 1-2 GB, it's time to act.

Clear the cache of individual applications in Settings → Apps

Use the built-in cleaning utility in MIUI

Delete Dalvik cache via Recovery Mode (for advanced)

Disable Automatic Optimization in Settings → Battery → Optimization

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⚠️ Warning: Don't confuse cache cleaning with factory resetting! The first procedure is safe and doesn't delete personal data, the second one erases everything, including photos and contacts.

2. Conflicts after MIUI update

MIUI firmware updates are supposed to improve the smartphone, but in practice, the opposite often happens.

• 🔄 Incomplete update installation – if the process is interrupted (for example, due to battery discharge).
• 📦 Incompatibility with modified files – if you have previously changed system fonts, animations, or removed embedded applications.
• 🛠️ Errors in the firmware itself - especially relevant for beta versions MIUI.

How do you know if the upgrade is a problem? If the smartphone started to reboot for a long time immediately after installing the new version of MIUI, this is a sure sign. For example, users of the Redmi Note 9 Pro have massively complained about hanging after upgrading to MIUI 14 due to a bug with display drivers.

Decisions:

1. Reverse to the previous version via Fastboot (instruction below).
2. Make a forced reinstallation of the current firmware on top of the existing one (without data loss).
3. Clear the cache section in Recovery mode.

3. damaged file system or memory

If Xiaomi’s smartphone not only reboots for a long time, but also slows down in normal mode, it could be the file system or physical problems with the drive, especially for devices with eMMC memory (such as the Redmi 8A or POCO M2), which degrades over time.

Signs of memory damage:

• 🐢 Slowing down after writing a large file (e.g. video) 4K).
• 🔄 Spontaneous reboots when connecting to a PC.
• ❌ Errors like "Com.android.systemui process stopped".

Diagnosis:

1. Connect your phone to your PC and check your memory health with CrystalDiskMark or H2testw (for Windows).
2. Go to Settings → Memory → Internal Memory → Three Dots → Check (in some versions of MIUI).

If tests show errors, try:

1. Format your phone via Recovery (reset to factory settings).
2. Replace the memory module (requires disassembly of the device).

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4. Conflicts with user settings

Many Xiaomi owners like to customize their devices, changing themes, installing third-party launchers, disabling system applications, but some changes can break the download chain, which causes the phone to “think” during the initialization stage of the system.

What most often causes problems:

• 🎨 Sub-items from MIUI Theme Store – Some contain code errors that conflict with the kernel.
• 🚫 Disabling system applications through ADB or Titanium Backup (for example, com.miui.weather2).
• 🔧 Change developer settings, such as “Do not save actions” or “Background processes".

How to get it back:

1. Reset the theme settings: Settings → Display → Themes → Standard.
2. Enable back the disabled applications: adb shell pm enable com.miui.weather2
3. Reset the developer settings: Settings → About Phone → MIUI version (5 times tap) → Disable.

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Always check other users' reviews before installing a custom theme. If there are complaints about "infinite download" in the comments, you better refrain.

5. Hardware problems: battery and power controller

If the software methods didn't work, you should think about the hardware malfunctions, and most often the faults are:

• 🔋 Worn-out battery – if its capacity falls below 60%, the power controller may not properly manage the voltage when restarting.
• 🔌 Damaged charging connector – oxidation or mechanical damage causes short circuits.
• 🔥 CPU overheating – if the smartphone is heated above 60°C, the system is forced to slow down the loading.

How to diagnose:

1. Check the battery status via AccuBattery (Android) or the command: adb shell dumpsys battery Look for health option - if it's not 2 (Good), the battery needs to be replaced.
2. Check the processor temperature in AIDA64 or CPU Monitor.

Decisions:

⚠️ Warning: If the battery is replaced, the plume or power controller is likely to be damaged, and a diagnosis at the service center is required.

6. Viruses and malware

Yes, Android viruses are not a myth, and some are specifically designed to block normal system loads by showing ads or demanding ransoms.

• 🔓 Unlocked loader (bootloader).
• 📱 Established APK unverified.
• 🔄Root-rights.

Signs of infection:

• Appearance of unfamiliar apps on the menu.
• Advertising in notifications or over the interface.
• Spontaneous installation of programs.

How to treat:

1. Install Malwarebytes or Dr.Web Light and scan the system.
2. Remove suspicious apps in Safe Mode (press the power button → “Safe Mode”).
3. If the virus blocks access to settings, reset via Recovery.

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Never install. APK-files from sites like apkpure.com or apkmirror.com without checking the hash amount.

Failures in the communication module (modem)

Few people know, but problems with the modem (which is responsible for cellular communication and Wi-Fi) can also cause a long reboot, which is because the MIUI initializes all the radio modules when it starts, and if one of them does not respond, the system “hangs” in wait.

Typical reasons:

• 📶 Wrong settings APN (especially after the change of operator).
• 🔄 Failure to work IMEI (post-stop).
• 📡 Damage to the antenna module (for example, after falling).

How to check:

1. Go to Settings. → SIM-maps and mobile networks → Access points (APN) Compare the settings with the official ones from your operator.
2. Check the IMEI by dialing *#06#. If Null or Invalid is displayed instead of the number, you need to restore.

Decisions:

• 🔧 Restore. IMEI Engineering Mode (this is required) MTK-processor QCN-file (for Snapdragon).
• 📱 Reset network settings: Settings → System system → Resetting settings → Resetting network settings.

FAQ: Frequent questions about Xiaomi's long reboot