Xiaomi's current smartphones are hugely powerful, but even 256GB of storage can run out at the wrong time. When storage gets crowded, the system gets slower, apps fly out, and new photos just don't have anywhere to save, a familiar situation for many owners of MIUI and HyperOS devices.
The problem isn’t always solved by simply removing a couple of apps. Often gigabytes eat away at hidden system files, messenger cache, and duplicate media that the user doesn’t even notice. In this article, we’ll look at proven cleaning methods that can help bring the device back to speed.
You'll learn which folders can be removed without risk to the system, how to use embedded tools effectively, and why third-party cleaners sometimes do more harm than good.
Analysis of vault occupancy
Before we start taking any drastic measures, we need to understand where the free gigabytes went. The MIUI shell and the new HyperOS have a built-in analyzer that visually shows the distribution of data. Go to Settings → Storage for a detailed diagram.
The system will divide the data into categories: apps, images, videos, documents, etc. Often it turns out that the lion’s share is not occupied by installed games at all, but by social network cache or downloaded files from cloud services, visualization helps to quickly identify memory eaters.
⚠️ Warning: Do not delete system folders with names that you do not know the meaning of, which can cause the operating system to malfunction or lose important settings.
Note the Others section, which is where the remnants of deleted programs or temporary update files are often hidden, and if this category is larger than 10-15 GB, manual file manager checks are required.
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The built-in storage analyzer is the safest tool for initial diagnosis, as it takes into account the specifics of the Android file system.
Use of the built-in "Security" application
Every Xiaomi smartphone has a Security system app preinstalled, which is not just an antivirus, but a powerful harvester to service the device. Start the app and select Cleanup to start cleaning.
The scanner will automatically find temporary files, remnants of deleted applications and advertising debris, the process takes no more than a minute, after scanning the system will prompt you to delete what you found, but do not rush to press the "Clean all" button thoughtlessly.
- 🧹 Garbage: Temporary system and application files that can be removed without fear.
- 📦 Large files: Often, forgotten movies or archives are found here that you no longer need.
- 📸 Screenshots: Old screenshots that rarely have value a month later.
The app also has a Deep Clean feature that allows you to view the contents of the memory in more detail, and you can find duplicate applications or unused ones. APK-installer.
Cleaning the cache of messengers and social networks
The most voracious apps on any Android smartphone are messengers. Telegram, WhatsApp and Viber store every image, video and voice message viewed in the memory of the device, and over time this cache can grow to tens of gigabytes.
In Telegram, the cleanup is done as safely as possible through internal settings. Go to Settings → Data and memory → Memory Use. There you will see the Media Storage slider and the Clear Cache button. Deleting the cache in Telegram does not delete your correspondence, the files will remain in the cloud and re-upload if necessary.
WhatsApp is more complicated because it doesn't have cloud caching in the same way, so you have to use a file manager or built-in storage management function inside the app itself in the Data and Storage section → Storage Management, where you can delete large files or media over a certain date.
☑️ Cleaning messengers
Don’t forget to check other social networks, such as VK or Instagram, which often have the option of saving the images viewed to cache for quick download, which eats up memory.
Work with gallery and duplicate files
Media files are the second most common source of memory overflows. The cameras of modern Xiaomi smartphones shoot in high resolution, and one photo can weigh 5-10 MB, and 4K video – hundreds of megabytes per minute.
The built-in gallery has a duplicate search function: Go to albums, scroll down to the Recent category or use smart search to find similar images. The system itself will suggest removing duplicate footage, leaving only the best in quality.
| File type | Average size | Where to find | Can I remove it? |
|---|---|---|---|
| Photo (JPEG) | 3-8 MB | DCIM/Camera | Yeah, unless you have to. |
| Video (MP4) | 50-500 MB | DCIM/Camera | Yeah, after watching. |
| WhatsApp cash | 1-20 GB | Android/media | Yeah, through the settings. |
| System cache | 500MB - 2GB | Hidden folders | Careful. |
It’s also worth checking the Downloads folder. Browsers and apps often save installation files there. APK, PDF-Documents and presentations that the user forgets after a week.Sort by size in the file manager will help you quickly find large forgotten files.
What is a folder.thumbnails?
Removing applications and working with APK
Often, we install apps for a one-time and forget about them, they may not be used for months, but they may take up space and maybe work in the background, go through the list of all the programs on the menu and delete everything you haven't used in the last 3 months.
Pay special attention to games. Modern mobile games with console-level graphics can take 5-10 GB each. If you pass a game or abandon it, ruthlessly delete. Xiaomi has an application deletion feature that groups rarely used software.
Another important thing is the APK installation files, and if you're downloading apps from a browser, not from Google Play, the installation file is stored even after you install the program. It's no longer needed.
- 📲 Open the Conductor.
- 📂 Go to the Download folder or APK.
- 🗑️ Delete all files with the.apk extension.
⚠️ Note: Before removing the application, make sure that it does not store important data that is not synced with the cloud.
Cleaning through Developer Mode and ADB (For Advanced)
For power users who want to squeeze the most space, there are deeper methods, one of which is clearing the cache of all applications directly through the developer menu, although in new versions of Android this feature is hidden. ADB (Android Debug Bridge from your computer.
And if you connect your phone to your PC, you can run a command to clear the packet cache. This is safe, but it requires USB debugging enabled.
adb shell pm trim-caches 999999999This command instructs the system to trim cache files across all packages to free up the specified amount of space (in this case, a very large number to clear as much as possible).This is especially useful if the phone interface is unstable due to overflow of the system partition.
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Use the trim-caches command only if you understand what you're doing. Standard settings cleaning is enough for the average user, but ADB gives access to hidden memory reserves.
It’s also worth checking the folders (remnants) of remote games at the root of internal memory, often after removing a heavy game, there’s a folder with the name of a developer (such as Gameloft or Tencent) that contains gigabytes of data.
Use of cloud services and memory cards
If internal memory is overcrowded, you should consider transferring some of the data. Take photos and videos immediately to the memory card (if your Xiaomi model has a microSD slot). SD-map through the settings of the camera application itself.
Cloud services are great for photos and videos: Google Photos, Yandex.Disk or Xiaomi Cloud. Set up automatic synchronization and use the “Free Space” function, which will remove from the device those photos that are already safely stored in the cloud.
This allows you to access the entire archive at any time without taking up the phone’s physical memory. For the movies and music you listen to offline, you can also use cloud storage with Wi-Fi caching.
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Moving media files to a memory card or cloud is the only long-term solution to the space shortage problem if you’re actively shooting high-resolution video.