Xiaomi phone started to brake - what to do? Step-by-step guide

Your Xiaomi suddenly became slower to respond to touch, apps take a long time to open, and animations twitch? These are typical symptoms of "brakes" that smartphone owners face after the smartphone is over. 1-2 The reasons can be both software failures and physical wear and tear of components. In this article, we will look at all possible causes of slowdown, from overloaded memory to battery degradation, and give specific solutions for each of them.

It's important to understand that brakes rarely come about "just like that: MIUI Over time, it is “clogged” with unnecessary processes, background applications eat resources, and hardware limitations (for example, a small amount of RAM) appear with OS updates. We won’t recommend “just reboot the phone” — instead, we’ll offer a system-based approach that helps identify and address the root of the problem.

This article is suitable for all Xiaomi, Redmi and POCO (including the Redmi Note 10/11/12, Xiaomi 12/13/14, POCO F3/F4/F5 If your smartphone is older than your smartphone 2018 Special attention is paid to the sections about battery and thermal paste - they are critical for old devices.

1. Diagnosis: how to determine the cause of brakes

Before you clean the cache or reset the settings, you need to understand what exactly is slowing down: hardware or software.

• 🔍 Check the CPU and RAM boot: open Settings → The phone. → System status (or use the application) CPU Monitor. If the CPU is loaded on 80-100% c simple, and free RAM less 1 GB is a problem in the background.
• 📊 Performance test: run AnTuTu Benchmark or Geekbench. Compare the results to the benchmarks for your model (search the Internet%+ — iron-wearing.
• 🔋 Battery monitoring: type in the dialer ##4636##, select Battery Health Information. If your battery is below 80%, the battery is slowing down.
• 🌡️ Overheating: use AIDA64 to check the temperature of the processor, if in downtime it is above 45°C – need to clean or replace the heat paste.

Pay special attention to sudden brakes (for example, after a fall or moisture), in which case the cause may be detachment of the memory chip or oxidation of contacts, only the service center will help.

⚠️ Warning: If the phone is only slowing in specific applications (such as games or instant messengers), the problem is not with the system, but with the software.

After updating MIUI|After the fall/hit|Gradually getting worse with time|Only in games/applications|I don't know.-->

System Cleanup: Remove Garbage and Optimize MIUI

The first thing to do is to free up space in memory and stop unnecessary processes. MIUI It's known for overgrowth of cache and duplicate files over time:

Delete the app cache|Stop background processes|Disable the autoload of unnecessary applications|Transfer files to SD-map|Virus testing-->

Step 1. Clear the cache:

1. Go to Settings → Applications → Application Management.
2. Select the app (start with the most “heavy” – Facebook, Instagram, TikTok).
3. Press Warehouse. → Clear the cache.
4. For complete cleaning, use the settings → Memory. → Cleaning (button "Deep cleaning»).

Step 2: Turning off the autoboot:

• Open Settings → Applications → Application Management → Autorun.
• Turn off autoboot for all applications except system (Phone, Messages, Google Services).
• In the section Permits → Special permits → Display over other windows disable unnecessary overlays (they slow the interface down).

Step 3: Optimization MIUI:

• Turn on the settings. → Additionally. → Optimization → Performance mode (select Balanced or High Performance»).
• Turn off animations: in Settings → About the phone, click 5 times on "Version" MIUI», Then to the Developer Settings → Scope window/transition animation select "Without animation».
• Remove unnecessary themes and wallpaper: Settings → Topics → My downloads.

A critical mistake many users make is clearing cache through third-party cleaners (such as Clean Master), which often delete important system files and cause the brakes themselves. MIUI!

Battery: The Hidden Cause of Brakes

If your Xiaomi is over 2 years old, there's a 90% chance that its battery has degraded. When the battery's health drops below 80%, the power controller starts to limit performance to reduce the load.

• Sudden suspension when connecting charging.
• Self-resetting when 20-30% charge.
• Brake when starting the camera or games.

How to check the status of the battery:

1. Enter the dialer ##4636## → «Battery information».
2. Check out the Battery Health option (or mb_06 in some models).
3. Use the AccuBattery app for detailed diagnosis.

If the battery health is lower 70%, No software methods will help, we need a replacement. 2018-2022 This is especially true because of the use of cheap batteries with a short life cycle.

⚠️ Warning: Don't buy cheap batteries on AliExpress! They often have understated capacity and can swell. Better to use original (Xiaomi Original) or certified (ZMI, Baseus).

4.Overheating: Why Xiaomi is "strangling" the processor

If the phone is hotter than 50°C, the system automatically trottlites (limits) the performance of the processor to avoid damage. This leads to sharp brakes, even if the CPU is not loaded:

• 🔥 Dry thermopaste (relevant for devices older than 2 years).
• 🧹 Dust clogging (especially in active-cooled models, such as Black Shark).
• 🔋 Defective battery (subdued or short circuit).
• 🎮 Long-term loads (games, video rendering).

How to check the temperature:

1. Install. AIDA64 or CPU Monitor.
2. Run a stress test (for example, 3DMark).
3. If the temperature is above 70°C - urgent cleaning needs.

Decisions:

• Replacement of thermopaste: in the service center (cost: 1000-2500₽). Self-replacement requires disassembly skills.
• Dust cleaner: use a compressed air can (not a vacuum cleaner!) and pay special attention to ventilation grilles.
• Performance Limitation: In Developer Settings, disable “Optimization” MIUI» and set the CPU limit on 70-80%.

For models POCO F1/F2/F3 And Black Shark overheating is a common problem because of the poor cooling system, so if you play on these devices, use cooling stands or limit the cooling. FPS play.

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If the phone is warming even in plain, check the charger.Non-original high-current power supplies (e.g., high-current power supplies, 30W instead 18W) It can cause the power controller to overheat.

5. Settings reset: when it really helps

If all previous methods fail, you'll have a hard reset, which will delete all the data, but it will bring the phone back to the factory state. MIUI Over time, it accumulates errors in system files, and resetting often solves the brake problem.

When to do the reset:

• The phone brakes even after cleaning the cache and turning off background processes.
• Artifacts appeared on the screen or random reboots.
• Update MIUI It's been a mistake.

How to reset:

1. Save important data (photos, contacts, messages) to your PC or cloud.
2. Go to Settings → About Phone → Resetting → Erase all data.
3. Select “Clear everything” and confirm.
4. After you reboot, set your phone up as new (don’t restore your backup – it may contain errors!).

⚠️ Warning: If the brakes are left after reset, the problem is precisely in the hardware (battery, memory, processor.

For models with an unlocked bootloader (Xiaomi.eu, LineageOS), you can try flashing your phone over Fastboot, a more radical method, but it helps with serious system failures.

6. Hardware problems: when to carry in the service

If the software didn't work, the brakes are caused by the hardware, and here are the typical hardware malfunctions and their symptoms.

As a rule, hardware problems occur after:

• 💦 Moisture (even if the phone doesn’t turn off immediately).
• 🤕 Falls or impacts (especially if the screen is not broken but the internal components have shifted).
• ⚡ Use of non-original chargers.

If your Xiaomi is caught in the rain or dropped in water, don't turn it on!

1. Turn off the phone (press the power button for 10 seconds).
2. Get it. SIM-card.
3. Place in a bag of silica gel (or rice) on 24-48 hours.
4. Don't plug in the charger!
5. After drying, take it to the service for diagnosis.

For Xiaomi models with LPDDR4X memory (e.g. Xiaomi) 11T, Redmi K40) This is a problem of "broken cells" of RAM, which manifests itself as random reboots, and in this case, only replacing the motherboard will help.

7. Optimization for older Xiaomi models (2018-2020 garland.)

If you have a Redmi Note 7/8, Xiaomi Mi 9/9T or 2018-2020 Years, brakes may be associated with outdated iron and newer versions MIUI. How to extend the life of a phone like this:

• 📱 Reverse to the old version MIUI: New updates are optimized for fresh processors. For example, Redmi Note 7 is better to use MIUI 12, not MIUI 14.
• 🔄 Install custom firmware: LineageOS or Pixel Experience run faster than standard MIUI.
• 🎯 Disable unnecessary functions: In Settings → Privacy → Special permissions disable "Display on Other Windows" for all applications. → Remove unnecessary syncs (e.g. Mi Cloud if you are not using). → Screen. → Update frequency set 60 Hz instead 90/120 Hz.
• 🔋 Replace the battery with a new one: Old batteries not only go down quickly, but also slow down the system.

For models with a Snapdragon processor 6xx/7xx (For example, Snapdragon 660/710/730) critically disable background activity:

adb shell cmd appops set < application package > RUN_ANY_IN_BACKGROUND ignore

This command disables background work for said application (replace) <package> to the name of the package, for example, com.facebook.katana for Facebook).

⚠️ Attention: On the old Xiaomi with 3/4 GB RAM: Don't install heavy launchers (like Nova Launcher or Microsoft Launcher) that consume extra memory and make the brakes worse. MIUI.

8 Prevention: How to Prevent Brakes in the Future

To prevent your Xiaomi from starting to slow down again, follow these rules:

• 🔄 Update regularly MIUI, But don’t install beta versions – they often contain bugs.
• 📱 Don’t forget: at least leave them free. 10-15% total.
• 🔋 Watch the battery: Do not discharge below 10%. Do not leave on overnight charging. Use the original chargers.
• 🧹 Clean your phone once every 3 months: Clear the cache through Settings → Memory. Remove unused applications. Check the temperature in the AIDA64.
• 🛡️ Use a cover with overheating protection (for example, with an aluminum insert).

For models with AMOLED-screens (e.g. Xiaomi) 11/12/13) It's important to turn off Always-On Display if you don't use it all the time. It's a resource-consuming feature that shortens screen life.

If you play or edit video frequently, consider buying a cooler (like Black Shark FunCooler). 10-15°C, which prevents trottling.

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Regular cleaning of cache, battery control and disabling unnecessary background processes prolong Xiaomi’s life on the Internet. 2-3 year-end.

FAQ: Frequent questions about Xiaomi brakes