How to speed up Xiaomi smartphone: a complete guide to optimizing MIUI

Does your Xiaomi slow down after the upgrade? Apps take a long time to open, animations twitch and battery goes down in half a day?The problem isn't "weak hardware" - even Redmi's flagship models K70 or POCO F6 over time, they lose their smoothness due to accumulated digital debris and suboptimal settings MIUI. In 80% of cases, the speed of work can be restored without resetting to factory settings - it is enough to properly clean the system and reconfigure the background processes.

This article is not a set of template tips like “remove unnecessary apps”; we’ll break down the hidden features. MIUI, Xiaomi doesn't advertise, from turning off aggressive telemetry to manually configuring the task scheduler. MIUI 14/15 (Android 13/14) And they don't require unlocking the bootloader or the rights of the superuser, and they're ready to give Xiaomi back the performance they've got after they've bought it?

1.Diagnostics: Why your Xiaomi is slowing down

Before optimizing, you need to understand the root of the problem. Brakes on Xiaomi are divided into three categories:

• 🔋 Software lags – overloaded memory, background processes, errors MIUI. Manifested as hanging when opening applications or slow scrolling menus.
• 📱 Hardware limitations – weak processor (e.g. Redmi) 9A), overheating or worn-out battery, characterized by sharp friezes when loaded (games, video shooting).
• 🔄 Firmware conflicts - bugs after the update MIUI or patches that are incorrectly installed, often accompanied by spontaneous reboots.

To distinguish soft brakes from “iron” brakes, perform the following test:

1. Close all applications and start Settings → The phone. → Version. MIUI — Quickly press 5 times on the line with the version. CTS (Compatibility Test Suite).
2. Choose a Single Test → PerformanceTest and wait for results. If FrameRate score is below 50 FPS When you scroll through the list, it's a problem in the software. If the test shows a Thermal throttle error, it's overheating.

Pay special attention to thermal trottling, when the processor artificially slows down due to overheating. On Xiaomi with the Snapdragon 7- and 8-series (for example, the processor is artificially slowed down due to overheating, POCO X5 Pro) this is a sharp drop FPS In games, in 15 to 20 minutes, you can check the temperature through a hidden menu:

#4636## → Information about the battery → Temperature

⚠️ Note: If the processor temperature exceeds 50°C in plain or 70°C under load - do not optimize the software, but clean the case from dust and change the thermal paste (in the service center).

System Cleanup: What to Delete First

MIUI It's known for clogging up memory with unnecessary files, and even after you delete applications, you get cache, templates and duplicates:

System debris disposal

• 🧹 Clearing the cache MIUI: Go to Settings. → Memory. → Clean up and click Deep Clean up.This will remove up to 1-3GB of unnecessary files, including Google Play Services cache and Mi Account.
• 🗑️ Remove duplicates: In the same menu, select Files» → «Duplicate». MIUI automatically finds repetitive photos, videos and documents (especially relevant for Redmi Note with 64 GB of memory).
• 📦 Cleaning up downloads: Folder /Download/ often contain obsolete APK-Files and archives. Use the Mi File Manager to sort by date and remove unnecessary items.

For advanced users: hidden cache files are stored in folders:

/data/data/*/cache/


/sdcard/Android/data/*/cache/

They can only be removed with the help of ADB file manager with root access (for example, FX Explorer).

Deactivation of embedded applications

Xiaomi preinstalles dozens of services that can't be removed by standard means, but can be disabled, which will free up up to 500 MB of memory and reduce the load on the processor.

To disable:

1. Go to Settings → Applications → Application Management.
2. Select an unnecessary application → Disable (not "Delete Updates»!).
3. Confirm the action. The app will disappear from the menu, but it will remain in the system.

💡

If after disabling GetApps no longer receive updates MIUI, Return it through the settings → Annexes → Show all applications → Turn on

3. Optimization MIUI: hidden speed settings

MIUI It has hidden features that allow you to speed up animations, reduce delays and reassign processor priorities.These settings are not documented by Xiaomi, but work on all models from Redmi 10 to Xiaomi 14 Ultra.

Acceleration of animation (developer)

By default. MIUI It uses late animation 1x, So this is what creates the brake effect, to remove the delays:

1. Activate Developer Mode: Settings → About Phone → MIUI version (click 7 times).
2. Back to Settings → Additionally. → For developers.
3. Find the items: Animation windows → set up 0.5x Or turn it off. → 0.5x. Duration of the animator → 0.5x.

These changes will make the interface instantaneous, but they may seem too drastic. If you don't like it, return the values to the interface. 1x.

Background optimization (MIUI Optimization)

MIUI has an integrated mechanism MIUI Optimization, which manages process priorities. It's set to balance performance and energy saving by default, but it can be reconfigured:

Settings → Battery and Performance → Performance Mode

• 🚀 Maximum performance – disables all limitations for background tasks, suitable for gamers, but reduces battery life by 15-20%.
• ⚡ Balanced – Optimal for most users.
• 🔋 Energy saving – limits background processes, but can cause lags in messengers.

For fine tuning:

1. Enable the Developer Mode (see above).
2. Go to For Developers → Background restrictions.
3. Turn off restrictions for critical applications (e.g. Telegram, WhatsApp).

Configuring the task scheduler

MIUI It aggressively closes the background apps to save battery, causing messengers to stop updating and the music to be interrupted:

1. Go to Settings → Applications → Permissions → Autorun.
2. Enable auto-run for applications that need to run in the background (e.g. Spotify, Viber).
3. Back to Settings → Battery and productivity → Select applications and set the "No Limits" mode for them».

For POCO-devices, for example, POCO X6 Pro) the other way:

Settings → Battery → Battery settings → Battery optimization → All applications

⚠️ Note: Do not add more than 5 apps to “Without restrictions” – this will lead to increased battery consumption and overheating.

4. Acceleration through ADB: for advanced users

If standard methods do not help, you can use them. ADB-This is a way of connecting to a computer, but it gives you the best results.

Preparation

You'll need:

• 🖥️ Computer with Windows/macOS/Linux.
• 🔌 Cable USB (preferably original).
• 📦 ADB Fastboot Tools by Google.

Steps:

1. Enable USB debugging on your phone: Settings → About Phone → MIUI version (7 times) → For developers → USB debugging.
2. Connect your phone to your PC and confirm your trust in your computer.
3. Open the command prompt (Windows) or terminal (macOS/Linux) in the folder with ADB.

Acceleration commands

Follow these commands in turn (copy and paste into the terminal):

adb shell settings put global hidden_api_policy 1


adb shell settings put global window_animation_scale 0.5




adb shell settings put global transition_animation_scale 0.5




adb shell settings put global animator_duration_scale 0.5




adb shell pm grant com.miui.securitycenter android.permission.WRITE_SECURE_SETTINGS




adb shell pm grant com.miui.securitycenter android.permission.PACKAGE_USAGE_STATS

What these teams do:

• Opening up the hidden API (Accelerates the work of system services).
• Reduce animation delays (as in section 3.1, but at the system level).
• Security Center gives the right to optimize background processes.

Once done, restart your phone. The effect will be noticeable immediately: apps will open faster, and scrolling through the menu will become smoother.

4.3.Switching off Xiaomi telemetry

MIUI sends usage data to Xiaomi servers, which consumes resources:

adb shell pm uninstall -k --user 0 com.miui.analytics


adb shell pm uninstall -k --user 0 com.xiaomi.midrop




adb shell pm uninstall -k --user 0 com.miui.systemAdSolution

These commands will remove analytics services, ad modules, and Mi Drop (if you don't use it) after you do:

• 📉 Reduce the load on the processor.
• 🚫 Disappeared banner ads in system applications.
• 🔒 Data about your actions will no longer be collected.

⚠️ Note: Disabling com.miui.systemAdSolution may disrupt some functions MIUI (If you notice a bug, return the application with the command adb shell cmd package install-existing com.miui.systemAdSolution.

5. Optimization for Games: How to Increase FPS

If your Xiaomi is slowing down in games (Genshin Impact, PUBG Mobile, Call of Duty, the problem lies in the limitations MIUI. Even on powerful chips (Snapdragon 8 Gen 2, Dimensity 9000), the system artificially reduces performance to save battery life:

5.1 Enabling Game Turbo Mode

Game Turbo is Xiaomi's proprietary technology for gamers, which turns off background processes, blocks notifications, and optimizes the CPU's clock clocks.

1. Open Settings → Special features → Game Turbo
2. Add the game to the list (click on it «+» and choose APK-file).
3. In the game settings, turn on: 🎮 Productivity → «Maximum». 📵 Blocking notifications → «All notices». 🔋 Energy conservation → «Disconnected».

For POCO-The other way is the other way: → Additionally. → Game Turbo.

5.2 Acceleration GPU via hidden menu

On smartphones with Qualcomm processors (Snapdragon) you can manually increase the clock frequency GPU. That'll give you an increase. FPS 10 to 20 percent, but it'll increase your heat!

1. Install the Throttling Test CPU from Google Play.
2. Run the test and it will show the current limitations. GPU.
3. Download PerfMonitor (requires root or ADB) and set a "Performance" profile».

For Mediatek (Dimensity, Helio), overclocking is impossible without root rights, but you can turn off trolling:

adb shell settings put global thermal_manager_enabled 0

This command disables the heat limit, but you risk overheating the phone. Use only with a cooling stand!

5.3. Setup of permission and refresh frequency

Many games automatically select the resolution below native to save resources. for example, on the Xiaomi 13 Pro with a screen. 2K play-off 1080p. To enforce maximum authorization:

1. In the game settings, find the item “Graphics” or “Quality”.
2. Choose Ultra. HD or 2K (if available).
3. Include maximum frame rate (60) FPS, 90 FPS 120 FPS).

You can install from Google Play:

1. Download. POCO Launcher.
2. Go to Settings → Applications → By default → Launcher.
3. Choose. POCO Launcher and confirm.

Installation of custom firmware (for experienced)

If you are ready to go to radical measures, you can install custom firmware on the base AOSP (So, for example, LineageOS, Pixel Experience:

• 🚀 Clean Android without unnecessary services Xiaomi.
• 🔄 Regular security updates.
• 🎛️ Flexible performance settings.

Cons:

• ⚠️ Loss of warranty (requires unlocking the bootloader).
• 🔧 The risk of “bricking” the phone in case of an error.
• 📱 Not all features work (e.g., the camera may lose quality).

Installation instructions (briefly):

1. Unlock the bootloader through the Mi Unlock Tool (requires a wait of 7-14 days).
2. Install TWRP Recovery for your model.
3. Download the firmware with XDA Developers.
4. Fastboot Flash Recovery twrp.img and fastboot reboot recovery.

⚠️ Attention: On models with Snapdragon 888/8 Gen 1 (for example, Xiaomi 11T Pro) unlocking the loader may cause problems with 5G-Before you run the firmware, check the reviews of a particular model!

7. Hardware methods: when the "iron" is to blame

If the software methods didn't work, the problem could be the physical wear and tear of the components, and the most common ones are:

• 🔋 Battery – after 500 charging cycles, the capacity drops by 20–30%, causing sudden shutdowns and brakes.
• 💾 Storage (eMMC/UFS) — Cheap Memory in Budget Models (Redmi) 9, POCO M3) Over time, it “degrades” which leads to lags when writing files.
• 🌡️ Thermopaste - dries after 2-3 years, which leads to overheating and trottling.

Checking the status of the battery

To find out the actual battery wear:

1. Enter the dialer: ##4636##.
2. Select "Battery Information".
3. Look at the Health or Wear Level parameter.

Transcript:

• 🟢 Good (100–90%) – battery normal.
• 🟡 Medium (89–80%) – noticeably reduced working time, possible lags with high load.
• 🔴 Bad (<80%) — replacement.

For accurate diagnosis, use AccuBattery (Google Play), the application will show the real capacity and discharge rate.

Storage performance test

Slow memory is a common reason for brakes on Xiaomi budgets, and you can check the read/write speed through AndroBench:

1. Install AndroBench.
2. Run the "Sequential" test. Read/Write».
3. Compare the results with the references for your model (see the table below).

If the reading speed is below the reference by more than 30%, the memory is degraded, in which case only the replacement of the module (in the service center) will help.

Dust cleaning and heat paste replacement

Overheating is one of the main causes of trottling. If the phone heats up even in plain time, check:

• 🌀 Ventilation holes - clogged with dust?
• 🛠️ Thermopaste - dried for 2-3 years of operation?

For cleaning:

1. Turn off the phone and remove it. SIM-map.
2. Carefully put the back cover with a plastic spatula (for models with a removable body).
3. Blow the dust with compressed air (a canister for cleaning equipment).
4. If the paste is dry, apply a new one (Arctic) MX-4 Or the Thermal Grizzly Kryonaut).

⚠️ Note: On models with adhesive body (Xiaomi 13, POCO X5) If you disassemble yourself, you'll lose your tightness!

8 Prevention: How to maintain speed

To ensure that Xiaomi does not slow down in the future, follow these rules:

• 🔄 Update. MIUI — Each new version contains optimizations (but don’t install beta firmware!).
• 🧹 Clean the cache once a month through Settings → Memory. → Cleanup.
• 🔋 Avoid full discharge – charge your phone at 20-80% to prolong the life of a baht