How to optimize the Xiaomi smartphone: full instructions for all models

Xiaomi MIUI-based smartphones are known for their functionality, but over time, even flagship models start to slow down. The reasons range from overloaded memory to incorrect system settings. Xiaomi optimization is not only cleaning the cache, but also a set of measures to configure the software and hardware parts.

In this article, you will find proven methods for all models, from the budget Redmi to the premium Xiaomi 14.We will discuss how to free up memory without losing data, configure application autoload, optimize the battery and even overclock the smartphone with hidden MIUI features. All recommendations are relevant for 2026 and take into account the latest firmware updates.

Don’t expect the optimization to turn the old Redmi Note 8 into a Xiaomi 13 Ultra, but it will bring the device back to speed that was out of the box.

1. Performance Diagnostics: Where to Start Optimizing

Before you start settings, identify the bottlenecks on your smartphone. MIUI has built-in diagnostic tools, but they are hidden in the depths of the menu.

Open Settings → About Phone → MIUI version and tap 7 times on the label “Kerole”. This activates the developer mode. Then go to Settings → Additional → For Developers and find the section “Performance Monitor”.

• 📊 CPU load – if continuously above 70%, applications overload the processor.
• 🔋 Battery activity – shows which programs drain the battery in the background.
• 🗑️ Memory usage – if RAM is clogged to 90%, cleaning is needed.

A critical mistake many users make is to clear the cache without knowing what is overloading the system, for example, if you see Facebook on a monitor that takes up 1.2 GB of RAM, the problem is not the cache, but the background activity of the social network, in which case it is not cleaning that helps, but limiting autoboot (more on this in the next section).

2.Memory Cleanup: How to Free Up Space Without Losing Data

Xiaomi smartphones suffer from two types of clogging: system cache and user files. One slows down, the other eats up memory. Let's look at both cases.

System cache and junk files

MIUI has a built-in cleaner, but it doesn't remove everything.

1. Go to Settings → Memory → Cleanup.
2. Click Deep Cleanup and select: ✅ Cash app. ✅ Residual files ✅ Logs of the system
3. For models with MIUI 14+, Storage Optimization is available – it automatically archives rarely used files.

Do not clear the cache of Google Play Services and MIUI System, this will cause disruptions in Google services and Xiaomi branded features.

2.2. User files: what can be deleted

Use the built-in memory analyzer (Settings → Memory → Analysis) and it shows:

• 🎵 Audio files – duplicate music from messengers.
• 📸 Screenshots and downloads – Download folder often contains unnecessary APK.
• 🎮 Cache games – for example, Genshin Impact can take up to 15 GB.

To clean up automatically, install Files by Google, the app finds unnecessary files and suggests that you delete them. And for models with MIUI 13+, the Smart Cleanup feature in memory settings is available, which runs on a schedule.

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If your smartphone says "Memory is full" but the analysis shows a free space, check the folder /sdcard/Android/obb/.

3. Optimization of autoboot and background processes

One of the main reasons for Xiaomi’s brakes is uncontrolled app autoloading, and even after closing, many programs continue to run in the background, consuming RAM and battery.

To turn off autoboot:

1. Go to Settings → Applications → Application Management.
2. Select an application (such as TikTok) and tap AutoRun.
3. Turn off the options: ✅ Auto-start ✅ Secondary launch (for the purpose of MIUI 14+)

For mass shutdown, use the hidden battery menu:

1. Enter the dialer code: ##4636##
2. Select Battery Information → Use of the.
3. This shows all the processes that consume energy. Tap on the unwanted app and choose Stop.

On models with MIUI 14 and later, there is a function "Freeze applications" (Settings → Applications → Freeze), which completely stops the background activity of selected programs.

4.Set up MIUI for maximum performance

MIUI offers a variety of hidden options that can speed up a smartphone, most of which are on the developer menu.

Activate the Developer Mode (as described in the first section) and make the following changes:

For models with Qualcomm Snapdragon (such as Xiaomi 12T or Redmi Note 11 Pro+), the option Optimize Games in Battery Settings is available. Turn it on for automatic performance in games.

Attention! Some devices are on. GPU-If the smartphone gets hot, turn off this option.

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Turning off animations gives the greatest speed gain on budget models (Redmi 9, Poco M3). On flagships (Xiaomi 13, 14), the effect is less noticeable, but still useful.

5. Battery Optimization: How to Extend Your Lifetime

Even after optimizing performance, the battery can run out too quickly. MIUI has several features to help extend the battery life:

• 🔋 Ultra Battery Mode (Settings) → Battery → Ultra mode – restricts background activity and reduces screen brightness.
• ⚡ Fast charging – turn it off if you are not in a hurry (Settings) → Battery → Fast charging. This will reduce heat and extend battery life.
• 🌙 The dark subject is on AMOLED-screens (e.g. Xiaomi) 11T Pro) saves up to 15% charge.

For models with MIUI 14+, the Adaptive Charging feature (Settings → Battery → Adaptive Charging) analyzes your habits and optimizes the charging process to reduce battery wear.

If the battery is discharged even in standby mode, check the consumption in the background:

1. Go to Settings → Battery → Battery Use.
2. Slip on three dots in the upper right corner and select Consumption in the background.
3. Turn off background activity for unnecessary applications.

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If the smartphone is discharged overnight 10-15%, Check geolocation. Turn it off for applications that don't need it (Settings) → Confidentiality → Permits → Geolocation).

6. Update firmware and reset settings

Sometimes optimization doesn't work because of outdated firmware or accumulated errors in the system, and in such cases, an update or reset will help.

Update MIUI

Check the relevance of the firmware:

1. Go to Settings → About the phone → System update.
2. If you have an update, download it and install it.
3. For stable operation, choose a stable version (not beta!).

On models with MIUI 13+, the Air Update (OTA) feature is available, which installs updates in the background without rebooting.

6.2 Reset to factory settings

If the smartphone is very slow, and other methods do not help - perform a soft reset:

1. Make a backup of the data (Settings → About Phone → Backup).
2. Go to Settings → About the phone → Reset settings.
3. Select Reset (does not delete files) or Delete all data (complete cleanup).

Attention! On models with bootloader lock (Xiaomi 12/13/14), the reset may require you to enter a Mi Account.

7. Additional methods: for experienced users

If standard methods fail, try advanced settings. They take longer, but can speed up your smartphone significantly.

• 🔧 Shutdown MIUI Optimizations (only for the MIUI 12.5+): adb shell settings put global miui_optimization_disabled 1 This team is disabling some of the restrictions. MIUI, Which can increase productivity.
• 🗃️ Transfer of applications to SD-Map (for models with support): Settings → Annexes → Select the application → Warehouse → Change. → SD-map
• ⚡ Use alternative launchers (e.g. Nova Launcher or Hyperion) to speed up the interface.

Attention, team! miui_optimization_disabled It can cause some functions to function unstable (such as gestures or themes). If there are failures, return the value to the user. 0.

For owners. POCO-Smartphones available in Turbo mode (Settings) → Special facilities → Turbo Mode. It optimizes performance for games and heavy applications.

8.Optimize for Specific Xiaomi Models

Some models require an individual approach due to the features of iron or firmware.

Xiaomi 14 and later has the "HyperOS" feature, a lightweight version of MIUI with improved optimization. Update the firmware to get this feature.

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On budget models (Redmi 8, 9), the biggest effect is turning off animations and clearing the cache. On flagships (Xiaomi 13, 14), it is better to focus on limiting background processes and updating the firmware.

FAQ: Frequent questions about Xiaomi optimization