How to Clean Memory on Xiaomi Redmi: From Basic Methods to Deep Cleaning

Xiaomi and Redmi smartphone owners often face a situation where the device starts to run slower, and system notifications persistently report a lack of free space.This is not just an annoying inconvenience, but a serious problem that can lead to a freeze in the MIUI interface or the inability to install important security updates. Android operating system requires free space for correct operation of background processes, and when the drive is full more than 90%, performance drops even on powerful flagships.

There are many ways to get your device back up, from standard tools built into the MIUI shell to manually removing system debris through file managers. It’s important to understand that simply removing apps often doesn’t work because most of the data is hidden in cache, residual files, and duplicate media. In this article, we’ll look at proven methods to help you safely free up gigabytes of space without losing personal photos and contacts.

Before embarking on radical measures such as a full reset, it is worth trying a comprehensive cleanup with regular means. System optimization is the first step that every user must take, and allows you to quickly delete temporary files accumulated over months of using messengers and browsers without affecting your personal data.

Use of the built-in "Security" application

Every Xiaomi smartphone has a Security system app preinstalled, which is often ignored by users, even though it has powerful memory-cleaning functionality.This tool automatically scans the device for temporary files, app cache and junk. Running a deep clean through this module is the safest way to quickly clear space without the risk of removing something important.

When you first run a scan, the system can show a large amount of garbage that can be removed. However, be careful: sometimes this list includes files that you could save. For example, the browser cache may contain saved passwords or autocomplete forms that you will have to re-enter after cleaning. So before clicking the "Clean" button, always check the contents of the files found.

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Periodically run the cleanup through the Security app once a week – this will prevent the accumulation of gigabytes of temporary data, which quietly take up space in the background.

Special attention should be paid to the Cleanup section, where you can configure in detail what will be deleted, where you can choose to clean the cache of applications, residual files after deleting programs and advertising debris, and this section often contains a tool to clean up large files that you may have downloaded and forgotten.

⚠️ Warning: Don’t use third-party Google Play client apps with aggressive advertising. Xiaomi’s built-in tool is enough, and third-party programs often become a source of garbage and intrusive notifications themselves.

Analysis and removal of large files and duplicates

One of the most common causes of memory shortages is forgotten high-resolution videos, or a series of photos shot in Burst mode. The standard file manager, MIUI Shell Explorer, has a convenient file sorting feature by size, allowing you to instantly identify "eaters" of space. Often, dozens of gigabytes are found to occupy old videos from WhatsApp or Telegram that have long lost relevance.

To clean up effectively, manually go through folders with media files. Pay special attention to the folders of messengers, where all images and videos are automatically saved, even if you have already viewed them and forgotten. Deleting such files through the gallery can be inconvenient, so using a file manager is preferable.

It's also worth checking for duplicate files. If you copy data from your computer frequently or sync failures in the cloud, your device can create copies of the same documents. Removing duplicates is a safe way to get back to space, because you don't lose the original files, you just remove the repetitions.

• 📂 Open the Explorer app and go to the Documents or Files category by sorting them by size.
• 🎬 Check the folder. DCIM →.thumbnails, where gallery miniatures are stored, which can grow to several gigabytes.
• 🗑️ Use search to expand files (for example,.mp4 or.apk) to find forgotten app installers or movies.

Cleaning the cache of messengers and social networks

The leaders in memory consumption in modern smartphones are messengers Telegram, WhatsApp and Viber. These applications store a copy of every image, video and voice message viewed in the memory of the device. Over time, the cache of such applications can reach 5-10 GB or more, which is a significant part of the available space on budget models Redmi.

Cleaning is best done through the internal settings of the apps themselves, rather than through the Android system menu, which allows you to more flexibly manage data: for example, delete the cache of video files, but save the history of correspondence and important documents. Telegram for this there is a separate section “Data and memory”, where you can configure automatic deletion of the cache after a certain period of time.

WhatsApp is similar, but it's a little different, so you can clear all the chat cache at once, or you can pick the specific conversations that take up the most space.

Working with Android folder and system garbage

More advanced users can try to clean the contents of the Android system folder, but extreme caution is required: this directory stores application data, including game cache, offline maps and downloaded files. Incorrectly deleting files from here can lead to resetting of game progress or loss of program settings.

First of all, you should pay attention to the folder. Android/data and Android/obb. Obb often stores heavy game data (graphics, sounds) in the folder. If you delete the game but the folder with its name is still there, you can delete it.

⚠️ Warning: Never delete.xml files or configuration files inside active application folders.This can cause programs to malfunction or fail to run completely.

Another source of debris is the MIUI folder at the root of internal memory, which can accumulate error logs, crash reports, and temporary system update files, and files with names that contain the words log, temp, or debug can usually be deleted without fear unless you're debugging your device.

• 🔍 Carefully study the folder name before deleting: if it coincides with the name of the remote application, safely delete it.
• 📉 Tencent and MicroMsg folders are Chinese versions of messengers or their remnants, check their contents.
• 💾 Files with the.apk extension in the download folder or in the root of the system are installers that are no longer needed after installing programs.

Removal of unused applications and their residues

The standard menu removal procedure does not always clean all associated files. After uninstalling a game or heavy program, the device often has empty folders or configuration files. To combat this, you can use the built-in Application Management feature in the MIUI settings.

In the application management menu, you can sort programs by size of space, which allows you to identify the "hidden leaders" that you rarely use, but which take up gigabytes, often games with heavy graphic content or video editing applications.

After removing the application, it is recommended to restart the device, which will help the system recalculate the file index and free up memory blocks that were formally considered occupied, and check the list of “Recommended” in Google Play, where the system itself tells you which applications you have not used in a long time.

Resetting settings as a radical method

If none of the above methods helped free up enough space and the system continues to work unstable, the last option is a full reset (Hard Reset), which will return the smartphone to a factory state, removing absolutely all user data, settings and applications.

Before you reset, it is critical to back up your data completely, either by using the Mi Cloud cloud service or by making a local copy to your computer, and remember that once you reset, you can't recover deleted files without a backup.

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A complete reset is a way to remove all system debris and registry errors that have accumulated over the years of use, but it takes time to reconfigure the device.

To perform the reset, go to Settings → About Phone → Settings Reset → Erase all data. The device will request confirmation and possibly a password from the Mi Account. Once rebooted, you will get a clean system that will work as fast as the day you bought it.

Prevention of memory overflow

To keep the memory problem from returning, it’s important to maintain digital hygiene: check downloads regularly, turn off auto-save media in instant messengers, and use cloud storage to archive old photos. Today’s Xiaomi smartphones have smart cleaning features that can be configured to automatically execute on a schedule.

Also worth keeping an eye out for system updates: newer versions of MIUI often improve memory and data compression algorithms, and using a microSD card to store photos and videos is also a great solution for models with a small built-in drive.