Where does memory disappear on Xiaomi: a complete analysis

Xiaomi smartphone owners often face an unpleasant situation: the device has just been purchased or updated, and notifications of space shortage appear in a couple of weeks. The problem of the disappearance of free space in the shells of MIUI and the new HyperOS is especially acute, since the system is prone to accumulating hidden caches and duplicates. This is not just a meter error, but a feature of the Android file system, adapted to the needs of the brand.

Understanding how the operating system distributes data effectively fights for each gigabyte. Often users see the mysterious “Other” category that can inflate to tens of gigabytes, taking up the lion’s share of storage. Xiaomi uses specific compression and caching algorithms that are not always correctly displayed in the standard interface.

In this article, we'll go into detail about memory storage mechanics, point to hidden folders, and suggest proven cleanup methods that actually work. You'll learn to distinguish system files from garbage, and you'll be able to get your gadget back up without losing important data.

Storage Anatomy: System Partition and User Data

The first thing to realize is that the memory of the smartphone is divided into strictly reserved zones, the system partition, where the MIUI itself resides or HyperOS, occupies a fixed volume that can not be used for personal files, the rest of the space is given to the user, but it is not monolithic.

The Android operating system that underpins Xiaomi firmware divides user memory into logical blocks, stores apps, their data, media files, and that mysterious system cache, and when you install a program, it takes up not only the space for the installation file (APK), but also creates a three-dimensional data structure.

⚠️ Warning: Never attempt to manually delete files from root system folders through root file managers unless you are 100% sure of their purpose.

A special role is played by the Data section, where the bulk of user debris accumulates, and this is where messengers store the photos and videos they receive for years, even if you deleted them from chat rooms long ago, and the system sees these files as important to the operation of applications, so it does not delete them automatically.

The phenomenon of the category “Other”: what is hidden inside

The most feared category is the Other (or System in some versions of the analyzer), which is a collection of cache of applications, residual files after deleted programs and temporary system data. In MIUI, the Other category often includes Telegram and WhatsApp cache, which is not defined as media files.

The mechanism for this category is related to how applications request write rights: If a program creates temporary files to clip clip or download updates in the background, they are often marked by the system as an unknown data type. Over time, this snowball grows, occupying a critical volume.

To combat this phenomenon, there are built-in tools: Xiaomi's standard cleaner is able to find some of this garbage, but is often powerless in the face of deep social media cache, requiring manual intervention or the use of specialized cleaning scripts.

Hidden eaters: messengers and social networks

The absolute leaders in disk space consumption are messengers. Telegram, WhatsApp and Viber are set to automatically store all media content by default. Even if you just watch a video in a channel, it is stored in cache, taking up space.

Each of these apps has a data and storage settings, and that's where you see the real picture: often a few gigabytes take up old files that you didn't even open. Telegram, for example, allows you to flexibly configure cache autodeletion, but this feature is disabled by default.

• 📱 Telegram: Go to Settings → Data and memory → Memory usage: Set a "Save Media" timer for 3 days or 1 week.
• 💬 WhatsApp: Go to Settings → Data and storage → Storage management: You can delete files larger than 5MB or media from specific chats here.
• 🎥 TikTok/Instagram: These apps don’t have a built-in button for full cache clearing, so they’ll have to be cleared through Android settings.

Remember that cleaning the cache inside the application does not always delete all files from the disk. Sometimes you need to go to the settings of the phone itself, find the application in the list of "Apps" and click "Clear cache" forcefully.

Radical methods: resetting and formatting

If software cleaning methods fail and the Other category continues to grow, the last resort is a complete reset, before you create a full backup of the data to the Mi Cloud cloud or to the computer, as all data will be destroyed.

There are two ways to reset: through the settings menu and through Recovery mode. The first option is more secure for the average user. You need to go to Settings → About Phone → Reset and select “Erase all data.” The second option requires you to clamping the volume buttons and power when the device is off.

Once reset, the system returns to factory status and all the phantom files disappear. However, if you immediately restore a full copy from the backup, the problem can return, as you return the garbage.

Memory Analysis: File Type Table

To understand what exactly takes up space, we turn to structured data. Below is a table describing the main types of files that consume memory in Xiaomi smartphones.

And the.thumbnails folder, which stores thumbnails of all your photos and videos, and with a lot of media, this hidden folder can grow to enormous sizes, sometimes exceeding the size of the originals, and it's a good way to make room periodically.

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Use Google Files’ Explorer app instead of the standard MIUI explorer to find duplicates and large files – it often finds what’s hidden from the system analyzer.

Prevention: How to prevent overcrowding

To keep the problem of "where memory goes" from becoming acute in the future, you need to adopt a habit of regular maintenance: don't wait for the phone to slow down. Take 5 minutes to check the storage once a month.

Use cloud services to store photos. Setting up Google Photos or Mi Cloud to automatically upload and then deleting local copies frees up gigabytes of space, and disable auto-save in group chat messengers, where postcards and unnecessary videos are often dropped.

Xiaomi engineers have regularly released patches that fix memory errors in different versions of MIUI. Sometimes the problem is software-based and solved by updating to the current version of the firmware.

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Regularly cleaning the messenger cache and using cloud storage are two of the main rules for saving free space on Xiaomi.