Owners of Xiaomi and Redmi smartphones sooner or later face a slowdown caused by an overflow of internal memory: the accumulation of temporary files, remnants of deleted applications and the cache of messengers turns the once-fast gadget into a slow system. Cleaning the system becomes not just a desirable procedure, but a necessity for comfortable use.
Modern MIUI or HyperOS shells offer powerful built-in tools for maintenance, but many users are unaware of hidden features or afraid to remove something extra. In this article, we will discuss in detail safe and advanced methods of freeing up space, learn how to distinguish system debris from important data and return your device to its previous performance.
Regular maintenance is not to be ignored, as a crowded /data partition can lead to critical errors in the Android operating system.We will look at both standard tools and deeper cleaning methods available through the engineering menu and file managers.The right approach will allow you to extend the life of your gadget without losing personal photos and contacts.
Use of the built-in Security application
The easiest and safest way to start maintenance is to use the Security app, which is a system tool that has deep file system access rights and can delete files that are not available to third-party programs. Launch the application and click on the large green button to scan.
Once the analysis is complete, the system will suggest removing the debris found. But don't be too quick to agree with everything. The Cleanup section often hides large files you may have forgotten or duplicates. MIUI can intelligently detect temporary files, but human control is never superfluous when working with memory.
⚠️ Attention: Before a mass cleanup, carefully review the file list in the "Big Files" section. Sometimes it turns out to be documents or archives that you downloaded for work, rather than advertising junk.
Cache Clearance is also available in the app, and cache is temporary data that speeds up the loading of frequently visited pages or running applications. It is safe to delete it, but the first launches of programs can take a little longer until the cache is re-formed, and regular use of this tool helps maintain optimal performance.
Manual cleaning through File Manager
To do a deeper cleaning, you need to use the standard File Manager, which, unlike automatic scanners, allows you to see the real structure of folders, go to the root directory and look at folders with the names of popular applications such as Telegram, WhatsApp or Viber.
Messenger folders often store gigabytes of videos and images that have been viewed once and are no longer needed. For example, the Android/media/com.whatsapp/WhatsApp/Media/Statuses path can contain hundreds of megabytes of statuses saved automatically.
Also worth checking is the Download folder. Users often forget about downloaded.apk installation files, presentations or music tracks. The file manager allows you to sort files by size, which helps you quickly find heavyweights occupying the space.
☑️ Checklist for manual cleaning
Remember the DCIM folder where your photos and videos are stored. If there are bad photos or blurred videos, deleting them is the first step to freedom. In addition, there are often folders in the root with the names of remote applications that left behind "tails" in the form of logs or configs.
Cache and application data management
Special attention should be paid to managing application-specific data through the settings menu. Some programs, especially social networks and browsers, grow to giant sizes. Go to Settings → Applications → All applications, select a heavy application and press Memory.
Here you'll see two main categories: Cache and Data. Cache cleaning is safe and recommended regularly, but cleaning the data will cause the app to reset as if it were installed: accounts will crash, settings and local game saves will be lost, and use this feature with caution.
| Type of data | What it keeps. | Is it safe to remove? | Effects of consequences |
|---|---|---|---|
| Cash. | Temporary files, thumbnails | Yes. | The app will load a little longer. |
| Data data | Accounts, settings, progress | No (no backup) | Complete reset of the annex |
| OBB files | Resources of heavy games | Only if you delete the game. | The game will stop running. |
| Logs. | Error reports | Yes. | No visible change. |
Pay special attention to video services applications like YouTube or Netflix, which can store gigabytes of offline data that users may have forgotten about, and regularly checking the list of installed apps helps identify hidden drives.
The Secret Android Folder
Cleaning through Developer Mode and ADB
For advanced users, there is the ability to clean system partitions that are hidden from the average user, which requires activating the developer mode by quickly clicking on the build number in the About Phone section, and once the Developer menu appears, you can enable debugging over USB.
Using a computer and the Android Debug Bridge (ADB) utility, you can execute commands to clear the Dalvik cache and system cache. This is especially useful if the phone is unstable after a firmware update. The adb shell pm trim-caches command (available on some versions of Android) or cleanup via Recovery mode allows you to delete temporary system files.
⚠️ Attention: Use of teams ADB Introducing the wrong command can cause system files to be deleted and your smartphone to fail.
Also in developer mode, you can limit background processes. Setting a limit on the number of applications running in the background (Limit of background processes) helps to free up RAM, which indirectly affects the speed of the system and less load the processor when cleaning the memory.
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Before performing any operations through ADB, make sure to make a full backup of important data to your computer or the cloud.
Storage analysis and removal of duplicates
Often, it's not the system files that fill the space, but our own duplicates. The Xiaomi gallery has an Albums tool built in, where you can find the Screenshots or Video folder. But you better use specialized features or analytics apps like Files by Google, which works great on Redmi to find duplicates.
Analyzers scan memory and show groups of identical files, often when you re-download documents from messengers or when a camera fails to make multiple copies of a single image, and removing those copies is the fastest way to get free space without losing content quality.
Don't forget to check cloud services. If you're syncing with Google Photos or Xiaomi Cloud, use the "Free Space" feature, which will remove photos and videos that are already securely stored in the cloud, leaving them available for viewing online.
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Regularly searching and removing duplicate photos and documents can free up up to 20-30% of the space you occupy without losing important information.
Prevention and optimization of the system
To avoid going back to cleaning too often, you need to implement simple digital hygiene practices: automate the process: set up automatic cache cleaning in the Security app or use scripts. It is also useful to disable auto-save statuses in messengers.
Xiaomi engineers are constantly optimizing the file system in new versions of MIUI and HyperOS. Sometimes the update solves problems with "bloating" the system partition, which ceases to take up anomalously much space.
Use a microSD card if your model supports expansion, transfer photos, videos and music to it, leaving internal memory solely for application installation, and this will prevent critical filling of the system partition, which is the main cause of brakes.