Xiaomi smartphones are famous for their performance, but over time, even the most powerful flagship starts to work slower. It is a natural process of accumulation of system debris, fragmentation of memory and residual files from remote applications. Users often notice that the device responds to commands longer, and free space disappears for no apparent reason.
Deep cleaning not only frees up gigabytes of space, but also extends battery life, because the processor doesn't have to waste resources on handling unnecessary background tasks. There are many methods, from simple built-in tools to radical resetting through the engineering menu. The choice of the particular method depends on how deeply you plan to interfere with the MIUI or HyperOS operating system.
In this article, we will discuss all the steps of optimization, from safe cache cleaning to full formatting. It is important to understand that deleting system files without proper preparation can lead to unstable work of the gadget, so follow the instructions carefully.
Analysis of occupied space and garbage disposal
The first step is always to diagnose. Before you run automatic scanners, you need to visually assess what exactly takes up space. Often users do not even suspect that half of the memory is occupied by forgotten videos in messengers or cache streaming services. First, go to Settings → Memory to see detailed statistics of the distribution of data.
The system will tell you which categories of files have grown the most, usually the “Other” section, which may contain temporary update files or error logs. Cleaning the app cache is the safest way to get back space, as it does not delete your personal data, logins or passwords. However, be careful with the cache of navigation maps or music services if you plan to use them offline.
Xiaomi’s built-in Security app has a powerful enough algorithm to find duplicates and large files, scans the device in seconds, and yet the automatic analyzer sometimes flags files you really need as trash, like APK installation packages or saved documents.
It is recommended to check the Download folder regularly. Many browsers save all downloaded files by default, creating chaos. Deleting old installers and temporary documents can instantly free up several gigabytes. Files larger than 100 MB that are in downloads longer than a month are no longer needed 90% of the time.
Use of the built-in "Security" application
The standard cleaning tool preinstalled in the MIUI shell is often underestimated as too simple, but it is ideal for basic maintenance. Launch the Security app and select Cleanup. The system will prompt you to delete temporary files, remnants of deleted programs and advertising debris.
In the Acceleration section, you force background processes to close, which is useful before you start heavy games or resource-intensive tasks, but you shouldn't make it a habit, because the constant forced shutdown of system services can, on the contrary, increase battery consumption, because the system will have to restart important processes.
- 🧹 Cleaning up garbage: Deletes temporary files and cache without risking personal data.
- 🚀 Acceleration: Frees up RAM for the current task.
- 🛡️ Antivirus: built-in scanner checks apps for malicious code.
Special attention should be paid to Deep Cleaning, which analyzes the contents of messenger folders, allowing you to selectively delete old voice messages or images viewed, especially for users of WhatsApp and Telegram, who accumulate terabytes of data.
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Do not delete files with the file extension.obb manually through the file manager, if you are not sure of their belonging - this can lead to incorrect operation of games.
Remember that automatic cleaning is not always effective against deep-seated tails of remote applications. So after running a standard utility, it is recommended to manually check the list of installed programs. If you have not used any software for a long time, it is better to remove it completely, rather than simply unload it from memory.
Manual cleaning through application settings
The most effective method of combating bloated cache is to manually control each application. Social networks and browsers tend to grow to giant sizes. To get into the control menu, go to Settings → Applications → All applications. Here you will see a full list of installed software with an indication of the amount of workload.
Choose the most "heavy" apps, like Instagram, TikTok or Chrome, and each has a "Clear" button inside the menu. It's important to distinguish between two types of cleaning: "Clear cache" and "Clear everything." The first operation is safe and only deletes temporary data, the second one resets the application to the state immediately after installation, removing logins and settings.
⚠️ Warning: Before using the Clear Everything feature, make sure you remember your account passwords or you will lose access to them.
The Gallery system service, which often stores a shopping cart that users forget to clean, has deleted photos that sit there for another 30 days, taking up space, and check the settings of offline maps in the navigators, sometimes it stores maps of entire countries that you no longer need.
☑️ Manual check of applications
If an application stops working correctly or crashes constantly, a complete data cleanup often solves the problem better than reinstallation, which allows you to correct errors in the local databases of the program. For Xiaomi system applications, this procedure is usually safe, since their configuration will recover automatically after restarting.
Removal of duplicates and large files
Duplication of files is a scourge of modern smartphones. When you share files via Bluetooth or Mi Share, and when editing photos, you often create copies of the originals. You can almost find them manually, so you better use specialized file managers like Files by Google or an integrated analyzer.
Large files like high-resolution videos or archives are often forgotten deep in folders. Xiaomi's standard Explorer can sort files by size. Go to Files and sort the list by size decrease. You'll be surprised to find forgotten video files the size of the file. 2-3 GB that lie dead weight.
| File type | Where to find | Can be removed |
|---|---|---|
| Temporary files (.tmp) | /cache or /temp folder | Yes, it's safe. |
| Error logs (.log) | Root of the system or application folder | Yeah, unless it's debugging. |
| Tumbnails (.thumbnails) | DCIM/.thumbnails | Yes, but they will be created again. |
| Installers (.apk) | Download folder | Yes, if the app is installed |
The.thumbnails folder deserves a separate discussion, and it stores thumbnails of your photos for quick display in the gallery, and over time, this folder can grow to the size of the original gallery, and it can be easily deleted, but keep in mind that the next time you open the gallery, the phone will again generate previews, which will temporarily load the processor.
Use cloud storage to archive rare files. Google Photos or Xiaomi Cloud free up space on your device by moving the originals to the cloud. This is the best way to save memory for new images and applications without losing access to the archive.
Cleaning through Recovery Mode and Resetting Settings
If the software cleaning doesn’t help and the phone is slow, you can try clearing the Cache partition through Recovery Mode.This is a deeper level of cleaning that deletes system temporary files without affecting the user’s personal data. To enter this mode, you need to turn off the phone and pinch the button combination (usually Volume Up + Power).
In the Recovery menu, navigation is done with volume buttons and power buttons. Find Wipe Cache Partition (not to be confused with Wipe Data!) This operation is safe and recommended after major MIUI updates to avoid conflicts between old temporary files and the new firmware version.
⚠️ Warning: Wipe Data / Factory Reset completely destroys all data on the phone, returning it to factory condition.
A complete factory reset is a radical, but most effective measure: the phone becomes "like new." Before you do that, make sure to back up your contacts, photos and notes. Once reset, the system will work as fast as possible, as all the accumulated software debris over the years will disappear.
How to Sign In to Recovery on Different Xiaomi Models
After a reset, take your time to install hundreds of applications at once. Put only what you need and watch the system work. Often the cause of the brakes lies in one particular, poorly optimized application that you install again. Clean installation helps identify those culprits.
Prevention and optimization of the system
To keep Xiaomi's phone running fast for a long time, it's not just cleaning it up, it's also good operation. Don't fill up your internal memory. 10-15% And the speed of writing and reading data drops, causing lags throughout the system. 5-10 GB free.
Turn off unnecessary animations and visuals if the device is not the first freshness. In the Developer Menu (to activate, you need to click 7 times on the build number in About Phone), you can reduce the scale of animation of windows and transitions. This will visually speed up the interface.
- 🔄 Updates: Keep your system and apps updated, but don’t beta.
- 🔋 Battery: Avoid full discharge to zero, it harms the power controller.
- 📡 Modules: turn off GPS Bluetooth when not in use to reduce load.
Regularly restarting the device is a simple but effective advice: turn off and turn on your smartphone completely once a week, allowing the system to reset errors in RAM and complete frozen processes that are not visible to the user.
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Regular reboot and 15% free memory are two of the main factors of stable operation of the Android-smartphone over a long distance.
Use lighter versions of apps if the phone is old. For Facebook, Instagram and Google, there are versions of Lite that consume significantly less resources and space. This could dramatically change the experience of using a budget smartphone.