How to speed up Xiaomi Redmi: from garbage cleaning to deep MIUI optimization

Your Xiaomi Redmi is slowing down, apps are slowing down, and animations are twitching? These are typical symptoms of an overloaded system that appear even on new models after 6-12 months of use. The reasons can be different, from cache clogged to unoptimized MIUI settings. But the good news is that in 90% of cases the problem can be solved without resetting to factory settings or replacing iron.

We tested all the current acceleration methods on the Redmi Note 12 Pro+, Redmi 10C and POCO X5 Pro (which run on the same platform) and only selected those that give a noticeable increase in performance. In this article, step-by-step instructions for MIUI 14/15, hidden developer settings and hardware optimization tips. And if you don’t want to dig into the menu, there’s an express method for the lazy at the end.

1.Diagnostics: Why is your Xiaomi Redmi slowing down?

Before you start optimizing, you need to understand the root of the problem. The brakes on Xiaomi are usually related to:

• 📱 Overloaded memory: less than 10% of the free space on the internal drive.
• 🔄 Background processes: applications that do not close completely and eat RAM.
• 🗑️ Trash cache: temporary files of system and user applications.
• 🔋 Energy saving: aggressive battery settings stifle performance.
• 🤖 Updates MIUI: Newer versions of the firmware sometimes contain bugs.

To determine the culprit, follow these steps:

1. Open Settings → About Phone → MIUI version and check the relevance of the firmware.
2. Go to Settings → Applications → Application Management → Memory and see which programs take up the most space.
3. Run Security → Accelerator (built-in MIUI tool) and analyze the CPU/RAM boot.

If you see in the Memory section that the system processes of com.miui.home or android.systemui consume more than 500 MB of RAM, this is a signal that you need to clean the cache or reset the launcher settings. And if the phone slows down immediately after the update, it is most likely the fault of the firmware bug (the decision is a rollback or waiting for a patch).

2. Waste cleanup: cache, temporary files and duplicates

The fastest way to get back to speed is to get rid of digital junk. MIUI has built-in tools, but they often miss deep debris deposits. We recommend combining system and third-party methods.

Method 1: Built-in "Accelerator"

This is Xiaomi’s official tool that removes cache, residual files and optimizes autoboot:

1. Open the Security app (shield icon).
2. Go to the Accelerator tab.
3. Press Deep Clean and wait for analysis.
4. Delete all found files (especially pay attention to the Residual Files and Cache of applications).

Method 2: Manually cleansing the cache of system applications

Some utility programs (e.g., Google Play Services or MIUI Launcher) accumulate gigabytes of cache that Accelerator doesn't touch, to clear them:

1. Go to Settings → Applications → Application Management.
2. In the search, enter the name of the system application (for example, launcher).
3. Select the application → Storage → Clear the cache.
4. For a complete reset, click Clear Data (⚠️ This will reset the application settings!).

Important: Do not clear the data of the Google Services Framework and MIUI System applications – this can cause malfunctions in the phone.

Residual files after deleting applications

Google Play Market and Services Cash

Cash MIUI Launcher and System UI

Download folder (downloads) in the file manager

Duplicate photos in the Gallery-->

Method 3: Third-party utilities (for advanced)

If the built-in tools don't help, use SD Maid (to clean up system debris) or Files by Google (to find duplicates and large files).

• 📁 Empty folders and incorrect labels.
• 🔍 Duplicate photos/video (including screenshots with the same content).
• 🗃️ Application cache that is not deleted by standard means.

Warning: Do not use cleaners like Clean Master or CCleaner, which often delete important system files and show false virus warnings.

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After cleaning the cache, restart the phone – this will allow the system to reassemble the necessary temporary files without unnecessary debris.

3. Optimization of autoboot and background processes

One of the main reasons for the brakes is the applications that start at the start of the system and hang in the background, consuming RAM and CPU. MIUI has hidden settings that allow you to turn off autoboot even for system programs.

How to turn off autoboot:

1. Open Settings → Applications → Application Management.
2. Select an unneeded app (such as Mi Video or Mi Music).
3. Press Autostart and turn off the slider.
4. To completely ban background activity, go to Permissions → Autostart and uncheck all ticks.

For mass shutdown, use the developer mode:

1. Activate Developer Mode: Settings → About Phone → MIUI version (click 7 times).
2. Back to Settings → Additionally. → For developers.
3. Find Process Limitation and set a maximum of 2 processes in the background.
4. Turn off window animation, transition animation, and animation scale (set the value to turn off animation).

Critical: If you turn off autoplay for Google Play Services, push notifications and account sync stop working, leave it alone, but limit background activity for social networks and instant messengers.

4. Battery setup: why energy saving is slowing down your phone

The MIUI Ultra Battery Saver feature aggressively limits performance to extend the run time.If you notice the phone getting slower after saving mode activation, here's how to fix it:

Disabling restrictions for individual applications:

1. Go to Settings → Battery and Performance → Application Power Management.
2. Select an app (such as Chrome or YouTube).
3. Set up a No Limits mode.

Set up a productivity profile:

MIUI 14/15 has a hidden High Performance mode that disables most of the restrictions:

1. Activate Developer Mode (as described above).
2. Go to For Developers → Performance profile.
3. Choose High Performance (⚠️ This will reduce battery life by 10-15%).

Attention: ⚠️ If you are using High Performance Mode on weak models (Redmi) 9A, Redmi 8, the phone may overheat. In this case, it is better to choose a balanced profile.

5. Update firmware and rollback to stable version

Sometimes the brakes appear after the MIUI update. For example, in the versions of MIUI 14.0.3-14.0.5 for the Redmi Note 11 there was a bug with animation lags that was fixed only in 14.0.6.

Option 1: Update to the latest version

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version is available, download it and install it.

Option 2: Reverse to stable firmware

If the latest update contains bugs, you can go back to the previous version.

1. Download stable firmware for your model from the official Xiaomi website (select the Stable section).
2. Rename the file to update.zip and place it in the root of internal memory.
3. Go to Settings → About Phone → System Update → Three Dots (menu) → Select a firmware file.
4. Select the downloaded file and confirm the installation.

Attention: ⚠️ Rolling back the firmware will reset all settings to factory. Pre-backup through Settings → Additionally. → Backup and reset.

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Before updating your firmware, always check reviews on forums (such as 4PDA or XDA Developers) where users share bug information in new versions.

6 Hardware Methods: If Software Optimization Has Not Helped

If all of the above methods did not work, the problem may be in the “iron”:

• 🔋 Battery worn out (capacity below 70%) – the phone automatically limits performance.
• 🔥 Overheating - at temperatures above 45°C triggers trottling (artificial power reduction).
• 🛠️ Damaged flash memory – slow recording/reading of data.

How to check the status of the battery:

1. Enter the dialer code: ##4636##.
2. Go to the Battery Information tab.
3. Check the wear level (if it is above 30%, the battery should be replaced).

How to reduce heat:

• 🎮 Limit it. FPS Install games via Game Turbo (install) 60 FPS instead 90/120 Hz).
• ☀️ Do not use your phone in the sun or near heat sources.
• 🧊 Remove the case during charging or heavy use.

If the phone is slowing down due to damaged memory, only replacing the module will help. eMMC/UFS. This is an expensive procedure (from 3 000 ₽), It is only suitable for flagship models (Redmi). K60, POCO F5).

7. Express method: reset to factory settings

If you don't have time to figure out the settings, and the phone is unbearably slow, do a hard reset, which will delete all the data, but return the performance to the factory state.

How to reset your settings:

1. Make a backup copy of important data (photos, contacts, messages).
2. Go to Settings → Additional → Backup and Reset → Reset settings.
3. Choose to erase all data and confirm the action.
4. After the reboot, set your phone up as new (don’t restore the backup – it could bring back old bugs!).

Attention: ⚠️ Do not use reset as a regular optimization method. This is an emergency measure that should be applied no more than 1 time every 6-12 months.

8.Alternative firmware: When MIUI is too heavy

If your Xiaomi Redmi is older than 2020 (Redmi Note 8 Pro, Redmi 9T), the standard MIUI may be too heavy for weak iron, in which case installing custom firmware based on Android 12/13 Go Edition or LineageOS will help.

Advantages of alternative firmware:

• ⚡ Higher speed due to the absence of “extra” functions MIUI.
• 📱 Support for new versions of Android on older phones.
• 🔒 No advertising and telemetry fees (relevant for global versions) MIUI).

Cons:

• ⚠️ Loss of guarantee.
• 🔧 Installation difficulty (needs unlocked loader).
• 📱 Possible bugs with camera or sensors.

If you decide to take this step, follow the instructions with XDA Developers or 4PDA for your model. For most users, we recommend trying all software optimization techniques first.

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Custom firmware is a last resort, starting with cleaning the cache, disabling autoloading, and updating MIUI, 80 percent of the time.

FAQ: Frequent questions about Xiaomi Redmi acceleration