How to Clean Android and Free Memory on Xiaomi Redmi 6

Owners of the popular budget smartphone Xiaomi Redmi 6 often face a situation where free storage space runs out and the system starts to work slower. This is a natural process for devices with 32 or 64 GB of internal memory, especially after several years of active operation and accumulation of app cache. A crowded drive not only limits the ability to install new programs, but can lead to sudden interface crashes and brakes.

Fortunately, the Android operating system in conjunction with the MIUI shell offers a wide range of tools for self-service gadgets. You do not need to be an advanced user or carry the device to the service center for basic optimization.

In this article, we will discuss all the steps of cleaning, from standard system tools to deep analysis of folders with garbage, you will learn which files can be deleted without fear, and which cannot be touched categorically. The right approach to file system maintenance will extend the life of your device and make it comfortable to use.

Analysis of storage occupancy and search for hidden volumes

Before you start deleting data, you need to understand what exactly takes up space. Often users delete rare applications without knowing that the bulk of the memory is occupied by photos in messengers or cache streaming services. In the shell of MIUI, a convenient analyzer is built in that visualizes the distribution of data.

To start the diagnosis, go to the Settings menu and select Storage (or Advanced Settings → Storage). The system will scan and show a diagram where the colors are highlighted apps, images, videos and system files. Memory analysis helps identify "eaters" of space that may have gone unnoticed.

⚠️ Note: If you see that the "Other" or "System Files" section takes up an abnormally large amount of space (more 10-15 GB), this may indicate the accumulation of error logs or residual files after deleted programs.

Pay special attention to the folders of messengers. WhatsApp and Telegram by default save all received media files in internal memory. In a year correspondence can accumulate gigabytes of video and pictures that are automatically uploaded to the gallery. Clearing this data through the settings of the messenger itself is often more effective than manually deleting files.

Use of the built-in "Security" application

The easiest and safest way to clean a Xiaomi phone is to use the regular Security app, which is pre-installed on all devices of the brand and optimized to work with the MIUI file system, which is able to find temporary files, remnants of deleted applications and advertising debris without affecting important user data.

Launch the app and click on the Cleanup button. The scanner will check the device and suggest that you delete the files that occupy the space. It is important to carefully review the list before confirming: sometimes the system flags as trash files that you may want to save, such as temporary documents from the browser.

Inside the app, there's a Deep Clean section, where you can find large files, duplicate photos, and rarely used apps. APK-Files can help you find installation packages that are already installed or no longer needed, but take up space in downloads.

Don't just rely on automatic cleaning. Periodically go to Accelerate (a broomstick icon in the main security menu) to unload processes from RAM. While this doesn't free up storage space, it helps to offload RAM and speed up the phone in a moment.

Manual deletion of cache and residual application files

Auto Cleaners don't always see everything. Some apps, especially social media and browsers, store huge amounts of data in their hidden directories. To get to them, go to Settings → Apps → All apps. Select a heavy app (like Instagram or YouTube) and find the Clean button.

Here, it is important to distinguish between two types of cleaning: Cache Cleanup and Data Cleanup. The first option deletes temporary files (pictures, scripts), which is safe and often solves problems with the application freeze. The second option completely resets the application to the “what is after installation” state, removing logins, passwords and settings.

Manual check path:


/Android/data/




/Android/obb/

For advanced users, a file manager is available. In the standard Google Explorer or Files app, you can manually check folders. Often, folders from long-deleted games or programs remain at the root of internal memory. If you are sure that the program is deleted, the folder with its name can be safely deleted.

Cleaning up multimedia: photos, videos and messages

Redmi 6's storage is usually personal media, high-resolution photos and videos eat gigabytes quickly, the first step is to sort the Gallery, remove blurry shots, bad take and screenshots that are no longer needed.

Remember to check the Recent folder. In MIUI, deleted photos are stored there for another 30 days, continuing to take up space. Cleaning this folder will instantly return occupied space. It is also worth checking the DCIM folder, where videos from instant messengers often accumulate if the camera settings do not set the saving to the memory card.

Another hidden source of garbage — SMS-Older correspondence with pictures and voice messages can weigh hundreds of megabytes. Use the Messages app to find and clean up heavy-content dialogues.

Removing unused applications and system debris

Xiaomi budget smartphones often have many apps pre-installed that users never use, not only take up space, but can also run in the background, using up battery life, go through the installed app list and ruthlessly remove games and programs that have not been used for more than a month.

For system applications that cannot be removed in the standard way, there is a disablement method. From the application menu, select an unnecessary system service (such as unnecessary Google or Facebook services if you do not use them) and click Disable, which hides the application and stops its processes, freeing up some resources.

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Use the “Lite” version of apps (like Facebook Lite or Google Go) that take up 5-10 times less space and run faster on Redmi 6-level processors.

It is also worth checking the Download folder. Browsers often save APK installation files there after updating applications. These files are no longer needed, since the program is already installed and can be safely deleted through the file manager.

Use of cloud storage and memory cards

If internal memory is critically small, the best solution is to transfer media files to the cloud or to an external medium. Xiaomi Redmi 6 supports microSD cards. Once you install the card, you can specify the storage of new files immediately on it in the camera and voice recorder settings.

Cloud services like Google Photos or Yandex.Disk allow you to free up space with the “Free Space” feature. The app uploads the original photos to the cloud and then deletes them from the phone’s memory, leaving only previews, which is the perfect way to store archives without loss of quality.

When using a memory card, it is important to remember its speed. For video recording, it is better to use U1 or U3 cards. Slow cards can cause delays when shooting or saving large files. Regularly back up important data to your computer, since flash memory is less reliable than cloud servers.

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The combination of a photo/video memory card and cloud storage for documents allows you to effectively expand the useful volume of Redmi 6 without buying a new phone.

Radical measures: reset to factory settings

If no methods are working and the phone continues to slow down and the memory is filling up on its own, a complete reset may be required. This is an extreme measure that will bring the device back to its state out of the box. Be sure to back up all contacts, photos and documents before doing so.

Resets can be done via Settings → About Phone → Reset. Select Erase All Data. The process will take a few minutes, after which the phone will turn on as new. This is guaranteed to remove all software debris, viruses and file system errors.

⚠️ Warning: Before resetting, make sure the battery is at least 50% and you remember the password from your Mi Account and Google account.Without passwords, you won't be able to activate the phone after reset due to security FRP.

After reset, take your time to install all the applications at once. Install them gradually, watching the behavior of the system. Often, one particular application causes crashes and overflows of memory. Clean installation of the system is the most effective way to "rejuvenate" an old smartphone.

Preventing memory overflow in the future

To keep the problem from returning in a month, change your smartphone usage habits. Check your download folder regularly, at least once a week, and delete the unnecessary ones. Turn off WhatsApp auto-save statuses and automatically upload videos to Telegram in the app settings.

Use a desktop cleaning widget. In MIUI, you can add a Cleanup or Security widget to the home screen. One tap on it will run a quick scanner to keep your finger on the pulse of the system's state. Regularity is the key to speed.

Watch for system updates. Xiaomi periodically releases patches that optimize memory and fix resource leaks. Go to Settings → About the phone and check for updates. The current version of Android is more stable than the outdated one.