How to Solve Xiaomi’s Memory Problem: A Complete Guide

The situation when the beloved Xiaomi smartphone suddenly starts to work slowly, and notifications about the lack of space appear with frightening regularity, familiar to every owner of Android devices. Overcrowded storage is not just an inconvenience, it is a direct path to the interface freeze, the inability to update applications and even the system to take pictures. MIUI, the proprietary shell of Xiaomi, has powerful built-in tools, but often standard methods are not enough to fully solve the problem.

In this article, we will detail why memory fills up so quickly, which folders can be deleted without risk to the system, and how to properly use hidden cleaning functions. You will learn to distinguish system files from user garbage and understand why deleting applications does not always free up space. Deep cleaning requires understanding the structure of the file system, and we will provide you with this information.

Before you start radical measures like resetting, you need to make a thorough diagnosis. Often users delete important documents, believing that it will free up gigabytes, while the real "eaters" of space are hidden in the cache of messengers and forgotten videos. Let's take a look at the algorithm of actions that will return your device to performance.

Storage Occupancy Analysis: Finding Hidden Volumes

The first step is always to visualize data. Standard conductor often only shows the big picture, hiding the real size of the folders, you need to use an integrated analyzer or install a specialized application to visualize disk space, which will allow you to see which directories occupy the lion's share of gigabytes.

Note the Android/data folder. Recent versions of Android have limited access to it, but it's where the caches of games and heavy apps are stored. The data in this directory can be as much as tens of gigabytes if you're actively using navigators or streaming services. Deleting the contents of this folder for a particular application will reset it, but free up space.

• 🔍 Use the built-in "Security" application" → "Cleaning for the primary scanning.
• 📂 Check the Downloads folder where installation files are often accumulated. APK.
• 🗑️ Look for files with the.log and.tmp extensions that can be safely deleted.
• 📸 Analyze the folder. DCIM, Where deleted photos can be stored in the gallery basket.

⚠️ Note: When analyzing system folders, never delete files with the.xml or.db extension from the root directories unless you are 100% sure of their purpose.

Special attention should be paid to the “Other” section in memory settings. Often, this label hides the remnants of deleted applications or damaged databases. The ext4 file system used in Xiaomi is not always automatically defragmented, so old deleted data can be formally considered occupied until the sectors are completely rewritten. Regularly restarting the device helps the system to redistribute resources.

Cleaning the cache and removing garbage files

Cache is a temporary file that speeds up applications, but over time inflates to incredible sizes. Unlike these applications, cache can be deleted without losing personal information, logins, or progress in games, but it must be done selectively, understanding the difference between cleaning a particular application and completely cleaning the system.

For manual cleaning, go to Settings → Apps → All apps. Select a resource-intensive app (like YouTube or Chrome) and click Clear Cache. Don't confuse this button with the Clean All option, which will reset the app to factory status. Aggressive cleaning of all apps can temporarily slow down your smartphone as the system will have to recreate temporary files.

adb shell pm trim-caches 999999999

This ADB-The command allows you to forcibly trim the cache of all applications to the specified size in bytes (the example shows a virtually unlimited crop, but the command can be adapted). USB and the presence of a computer, but gives the maximum result where the interface is powerless.

Remember the thumbnails of the photos. The DCIM/.thumbnails folder can weigh several gigabytes. It's a hidden folder, and standard cleaning tools often ignore it. Deleting the contents of this folder is safe: the next time you open the gallery, the thumbnails will be recreated, but the space will be vacated immediately.

Working with messengers: Telegram, WhatsApp, Viber

Messengers are the main culprits behind the memory shortage on today’s Xiaomi smartphone, which automatically saves every photo and video they receive into internal memory, creating duplicates and occupying space. In Telegram, for example, media files can be stored in cache indefinitely if you do not configure autodeletion.

In Telegram settings, go to Data and Memory → Memory Use. You can limit the cache size to, say, 500MB or 1GB. The system will automatically delete old files when the limit is exceeded. This automatic management eliminates the need for manual cleaning every couple of weeks.

WhatsApp is more complicated because of encryption and folder structure, and it's better to use the built-in storage management function: Settings → Data and Storage → Storage Management. The app will show files larger than 5MB and allow you to delete them in a bundle. Manual deletion of files through the handler in WhatsApp folders can lead to loss of correspondence history if you touch databases.

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Tip: Turn on the "Save to the Gallery" option in all messenger settings for select contacts only, and this will prevent the main gallery from getting clogged with advertising stickers and postcards.

Optimization of photos and video files

Media files are the heaviest content. High-resolution images and 4K video quickly eat up space. If you have a Xiaomi model without memory card support, optimization is especially important. Modern compression algorithms allow you to reduce the weight of the photo without visible loss of quality.

Use cloud-based space-free services, such as Google Photos or Yandex.Disk, which can upload originals to the cloud and remove them from the device, leaving only thumbnails, and this hybrid storage allows you to access the entire archive, taking up minimal space on the phone.

It's also worth checking the gallery's "Recently Deleted" folder. The files you deleted keep lying there for 30 days, taking up space. Cleaning this basket is the fastest way to get a few gigabytes right now. Don't forget the screenshots too: Screenshots folder often contains hundreds of forgotten images.

⚠️ Note: Before removing the original photos to the cloud, make sure that the sync is successful and the files are correctly displayed in the web version of the service.

For owners of large video archives, it is recommended to transfer old videos to an external hard drive or computer. the internal memory eUFS used in Xiaomi is not designed for long-term storage of files that you do not plan to view often.

Removal of duplicates and system debris

When you use your smartphone, install and delete applications, you accumulate duplicate files in the system, which can be the same images saved in different folders, or the remnants of remote programs, and it's almost impossible to find them manually, so you should use specialized search algorithms.

Some file managers, like Files by Google or Cx File Explorer, have built-in duplicate search features. They compare not just names but also checksums of files. Duplicate search is safe if you delete copies leaving at least one original. Be careful with system ringtones and wallpaper - duplicate is often a feature of the MIUI shell.

The file deserves special attention. MIUI/debug_log. It sends error reports to it, and if you're not a developer and you're not debugging the firmware, you can delete the contents of that folder, and sometimes it can grow to a few gigabytes if the system crashes, triggering continuous logging.

Radical measures: Resetting and reflashing

If neither cache cleaning nor file deletion helps, and the memory fills up on itself even on an empty phone, it may be the file system or firmware logic error, in which case a full Hard Reset helps, which returns the smartphone to a factory state.

Before reset, make sure to back up. Use the built-in "Mi Backup" app or sync with Mi Account. The reset process looks like this: Settings → About Phone → Reset → Erase all data. After this procedure, the phone will be like new, without unnecessary software debris.

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Wipe Data is the only guaranteed solution to the problem of “bloating” the system partition, when the memory is filled by itself without user actions.

In extreme cases, when even a reset doesn't work (which is rare), you need to flash the device through your computer using the Mi Flash Tool, which completely replaces the smartphone software, rewriting all the memory partitions clean, but for the average user, resetting the settings through the menu is usually a sufficient solution.

⚠️ Warning: Performing a complete reset permanently deletes ALL data from internal memory, including contacts (if not synced), photos and apps. Make sure you have an up-to-date copy of important data.

Once you're back to factory settings, don't rush to install all the apps at once. Try using a clean phone for a couple of days. If the memory is stable, then one of the apps you installed was the problem. Install the programs one by one to figure out the culprit.