Xiaomi phone slows and blunts – how to fix in 10 minutes

Your Xiaomi has become slow to respond to touch, apps take a long time to open, and animations twitch? That doesn't always mean that it's time to change your smartphone. 80 percent of the time, the brakes are caused by software problems that can be fixed without going to the service center. Even budget models like the Redmi Note 10 or the POCO X3 Pro can work quickly when set up properly.

In this article, we’ll look at all the possible causes, from overloaded memory to hidden MIUI features that steal resources, how to diagnose a problem, which settings to optimize first, and when to really think about replacing a battery or chipset. And we’ll also uncover the secret performance mode that Xiaomi hides from users in standard settings.

1.Diagnostics: why Xiaomi started to slow down

Before you start "treatment", you need to understand what causes the lags. Brakes can manifest themselves in different ways:

• 🐢 Slow animation – transitions between screens twitch, applications open with a delay.
• 🔄 Spontaneous reboots – the phone suddenly shuts down or restarts.
• 🔥 Overheating – the body becomes hot even under light load.
• 📉 Fast discharge – the battery goes down in a few hours without active use.

Each symptom points to a cause. For example, twitching interfaces are often associated with a lack of RAM or fragmented storage, and overheating can signal problems with the processor or thermopasta. Xiaomi with MIUI firmware has a built-in diagnostic tool — Settings → About Phone → Diagnostics of the system. It will show CPU load, memory and temperature in real time.

Pay special attention to background processes. In MIUI, many system applications (e.g. miui.analytics or com.xiaomi.midrop) can consume up to 30% of resources even in standby mode. You can check this through Settings → Applications → Application Management → Permissions → Autorun. If there are more than 20 applications on, this is one of the main reasons for brakes.

2. Cleaning the system: remove garbage and cache

The most common cause of brakes is clogged memory, and even if you have 10-15GB of free space, the system can run slowly due to fragmented files and crowded cache.

Remove unused applications|Clear the cache of all applications|Remove duplicate photos/video|Disable the autoload of unnecessary services|Transfer files to SD-map-->

For deep cleaning, use the built-in Security app:

1. Open Security. → Cleanup.
2. Press Deep Clean and wait for analysis.
3. Delete residual files, cache and junk data.
4. Go to the Acceleration tab and stop unnecessary background processes.

For Xiaomi models on Android 12+, there is a hidden MIUI Optimization feature that automatically clears the memory when the screen is locked.

adb shell settings put global miui_optimization 1

This command requires PC connectivity and USB debugging enabled (Settings → About Phone → MIUI version – press 7 times, then go back to Additional Settings → For Developers).

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If an app (such as Instagram or Telegram) is slower after cleaning the cache, don’t worry. This is temporary: the system will recover the necessary data the next time it runs.

3. MIUI Optimization: Hidden Settings for Acceleration

MIUI is known for its heavyweight interface, but it has hidden features to optimize performance, and most users are unaware of their existence.

The first thing you need to do is turn off the animations, and they not only slow down, they also increase the workload on the processor.

1. Activate the Developer Mode (as described above).
2. Go to Settings → Additional settings → For developers.
3. Find the items: Window animation scale → Off. Transition animation scale → Off. Animation duration → No animation

The second is to limit background activity: In MIUI, many system services (e.g. miui.daemon or com.xiaomi.finddevice) are constantly synchronized with Xiaomi servers, even if you don't use these features, to disable them:

1. Go to Settings → Accounts and Synchronization.
2. Turn off sync for unnecessary services (e.g. Mi Cloud if you don’t use backups).
3. In Settings → Applications → Application Management, find system applications and turn off Auto Start and Background Activity from them.

The third step is to switch to performance mode. Some models (POCO F3, Redmi K40) have a hidden menu with power consumption profiles:

1. Enter the phone code in the app: ##4636##.
2. Select Battery Information.
3. In the upper right corner, click on three dots and select a Performance Profile.

4.Memory problems: what to do if there is not enough RAM

Lack of RAM is one of the main reasons for the brakes. In Xiaomi’s budget models (such as the Redmi 9A with 2 GB of RAM), the system can “gasp” even when opening 3-4 applications.

For Android 11 and later, there is a RAM Expander feature that allows you to use some of the internal storage as an additional RAM to activate it:

1. Go to Settings → About the phone → Memory.
2. Click on RAM Extension.
3. Select volume (recommended 1-2 GB for models with 4 GB of RAM).

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Virtual memory (RAM Expander) does not replace physical RAM, but can improve multitasking by 15-20%.It works best on phones with UFS 2.2+ (such as Xiaomi 11T or POCO F4).

If your Xiaomi is slowing down even after all the manipulations, check the memory status through the AIDA64 app (available on Google Play).

• 📊 Free RAM (must be at least 20% of the total).
• 🔄 Data exchange frequency (high values indicate leakage).
• 🚀 Memory type (if specified eMMC instead of UFS - this may be the cause of the brakes).

5. Hardware problems: when the "iron" is to blame

If the software didn't work, maybe the problem is the hardware, and most commonly, the brakes are:

• 🔋 Worn-out battery – when it degrades below 80% of capacity, the phone begins to limit performance.
• 🔥 Overheating of the processor due to dried thermal paste or clogged radiator.
• 💾 Damaged memory – Bad sectors on the drive cause freezes.
• 📶 Faulty communication module – problems with the antenna or modem can be loading the system.

Check the status of the battery through the application AccuBattery or built-in utility:

1. Enter the phone code in the app: ##4636##.
2. Select Battery Information.
3. Check the parameter Wear level (if it is above 20%, it is time to change the battery).

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If Xiaomi phone suddenly starts to brake when charging, check the power supply. Cheap charging with unstable voltage can cause the processor to trottling (automatic frequency reduction).

To check for thermal paste and cooling, use the CPU Throttling Test app (available on Google Play), and if the test shows a Throttling detected, the processor is overheating.

1. Check if the air vents are clogged (especially in active-cooled models like the Black Shark).
2. If the phone warms even in a simple, perhaps dried thermopaste - will require disassembly and replacement.
3. For a temporary solution, you can use a cooling stand or limit the maximum processor frequency through the developer settings.

⚠️ Warning: If your phone starts to brake and warm up after a fall or hit, don't try to disassemble it yourself, which may indicate damage to the motherboard, which requires professional diagnosis.

6. firmware update and rollback to stable version

Sometimes the brakes appear after the MIUI update. This is especially true for beta versions or firmware based on Android 13/14, which may not be optimized for older models.

1. Reverse to the previous version (if backup was created).
2. Install custom firmware (e.g. Pixel Experience or LineageOS).

To return to the stable version of MIUI:

1. Download the necessary firmware from the official Xiaomi website (choose Global or EEA region).
2. Rename the file to update.zip and place it in the root of the phone’s memory.
3. Go to Settings → About the phone → System update.
4. Click on the three dots in the upper right corner and select Select the firmware file.
5. Confirm the installation and wait for the reboot.

If you decide to use custom firmware, remember:

• 🔓 You will need to unlock the bootloader (the procedure takes up to 72 hours).
• 📱 The warranty on the phone will be cancelled.
• 🔄 Certain functions (e.g, IR-blaster NFC) They may not work properly.

For models POCO and Redmi with Snapdragon processors, we recommend the Pixel Experience firmware - it is lighter than standard MIUI and devoid of unnecessary services.

7.Extreme measures: reset to factory settings

If none of these things work, it's a radical reset, but it's guaranteed to eliminate the software brakes caused by:

• 🗑️ Accumulated system debris.
• 🔄 Update conflicts.
• 📱 Viruses or malware.

Before discharge, it is mandatory:

1. Create a backup through Settings → Additional settings → Backup and reset.
2. Remember or take pictures of your Wi-Fi, Bluetooth and account settings.
3. Remove the SD- card and the SIM- card (if any).

For discharge:

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. Confirm the action and wait for the reboot (can take up to 10 minutes).

⚠️ Warning! Some models (Xiaomi 12, POCO F4) may require re-assignment of the Mi Account after reset, and if you forget your password, the phone will turn into a brick!

After discharge:

• 🔄 Do not restore data from the backup immediately - first check if the brakes are gone.
• 📱 Install applications gradually, watching the performance.
• 🚀 Turn off automatic update MIUI in Settings → About Phone → System Update.

8.When it's time to carry to the service: signs of hardware malfunctions

If Xiaomi continues to slow down after all the manipulations, it may be a hardware malfunction, and here are the signs that you should contact the service center:

• 🔥 The phone overheats even in a simple (more than 50°C according to AIDA64).
• 🔋 The battery is swelled or discharged in 1-2 hours without load.
• 📱 The screen flickers or artifacts appear (stripes, dots).
• 💾 Applications are crashed with the "Stop" error even after reinstallation.
• 📡 The modem loses the network or does not catch GPS.

The cost of repair depends on the fault:

For models older than 3 years (such as the Redmi Note 8 or Mi 9), repairs may not be cost-effective. In this case, it makes sense to consider buying a new phone. Note the POCO X6 Pro or Redmi Note 13 Pro+ — they offer excellent value for money.

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If your Xiaomi is warranty-free, don’t try to repair it yourself! opening the case or replacing components will void warranty obligations.

FAQ: Frequent questions about Xiaomi brakes