How to Clean Memory on Xiaomi: A Step-by-Step Guide

Xiaomi smartphones are famous for their performance and rich functionality of the MIUI shell, but even the most powerful devices face a lack of free space over time. Overcrowded storage is not just an inconvenience when you can’t take a new picture, it is a direct threat to the stability of the entire Android operating system. When internal memory is filled with garbage, the gadget starts to work slower, applications fly out and updates stop being installed.

In this article, we’ll look at proven and safe ways to free up space that will work for both the Redmi series’ budget models and the Mi and Xiaomi flagships. You’ll learn to distinguish system files from temporary ones, use built-in cleaning tools correctly, and forget about intrusive space-scarcity notifications forever. Deep cleaning requires care, but the result is worth it.

Before we start taking radical steps like resetting, we should try softer and more efficient ways: Storage optimization starts with analyzing what is taking up precious gigabytes, and it often turns out that half of the volume is occupied by forgotten videos or social media cache that can be safely deleted.

Analysis of occupied space and search for large files

The first step to freeing up space should always be diagnostics. Android’s standard tools and MIUI shell provide fairly accurate tools for data visualization, and you need to be clear about what type of content is eating up your memory budget to act point-by-point rather than randomly.

Go to Settings → Memory (or Settings → About Phone → Memory in older versions of firmware) and the system will show the occupied volume and prompt you to click Clean to remove obvious debris.

• 📊 Click on the Cleanup icon in the Security app to see the volume of temporary files.
• 📁 Use the Storage Analyzer section to sort files by size.
• 🗑️ Note the Recycle Bin folder in the Gallery, where deleted photos can lie for up to 30 days.

⚠️ Note: When deleting files through the system analyzer, carefully look at the path to the file. Do not delete files from system folders with names like Android/data or MIUI, if not sure of their purpose, as it can disrupt the application.

Special attention should be paid to download folders. Browsers and instant messengers often save all received documents and images to the shared Download folder. Manually checking this directory through the File Manager Explorer often allows you to free up a few gigabytes in a couple of minutes. Delete old.apk installation files that have already been used.

Cleaning the cache of applications and system debris

The most common reason for space shortages is the sprawling cache of apps.Social networks like Telegram, Viber and Instagram save thousands of images and videos viewed to speed up their re-loading.Over time, this temporary buffer can take up to 10-15GB of storage.

To clear the cache of a particular application, go to Settings → Apps → All apps. Select the desired program (for example, YouTube or TikTok) and find Memory. There you will see the Clear Cache button. It is important not to confuse it with the Clean Everything or Erase Data button, as it will delete your logins and settings inside the application.

There is also a system cache that accumulates during MIUI operation, which can be removed through Recovery mode, but it is safer for the average user to use regular cleaning tools, and a regular procedure helps to maintain the system performance at a high level.

• 🚀 Clean the cache of heavy apps (maps, navigators, streaming services) once a week.
• 📱 In the Security app, use the Deep Clean feature to search for residual files.
• 🔄 Reboot your phone after mass cache cleaning to redistribute system resources.

Caching is a necessary process for fast interface operation, and completely removing all temporary files will cause the processor and modem to load data again, which can temporarily increase battery consumption.

Removing duplicates and optimizing media files

Photos and video are the main memory consumer on a modern smartphone. Xiaomi owners often take many high-resolution pictures without thinking about what each file is. 4K-Video can weigh hundreds of megabytes. Duplicate files that occur when sync fails or reloads also steal space.

Xiaomi's built-in Gallery tool can find similar images. Open albums, scroll down or find the Guidelines section, where the system itself will suggest removing blurred photos or duplicates, which is the safest way to clean up the library without risking losing important memories.

If you’re not ready to delete a photo, consider changing your camera settings. Switching from HEIF to standard JPEG can increase compatibility, but Xiaomi’s modern codecs save up to 50% of space when shooting in HEIF without losing quality. Check the camera settings in Settings → Image format.

Another effective method is the use of cloud services: setting up automatic sync with Google Photos or Xiaomi Cloud with the “Free Space” function allows you to store originals on the network, leaving only compressed copies on the device or completely deleting local files after downloading.

Working with messengers: Telegram, WhatsApp, Viber

Messengers have evolved into powerful media combines that by default store every sent sticker, gif and video in the memory of the phone. Telegram, for example, is known for its limitless cloud storage, but its local cache on Xiaomi can grow to giant sizes if you do not configure autodeletion.

In Telegram settings, go to Data and Memory → Memory Use. You can set a cache size limit (e.g. 512MB or 1GB) here. Once the cache reaches that limit, the old files will be automatically deleted. This is an automatic cleanup that runs in the background.

• 💬 On WhatsApp, go to Settings → Data and storage → Storage management to remove large files.
• 📹 Turn off auto-save media in the gallery in the settings of each messenger.
• 🗑️ Check the Documents section in chat rooms regularly, there are often heavy, but no longer necessary files.

⚠️ Note: Before clearing the messenger data, be sure to back up the chats in Google Drive if you don't want to lose your correspondence history. Clearing the application's data (not the cache) will delete all correspondence without the possibility of recovery.

For Viber and WhatsApp, there is also a Media folder at the root of internal memory, where all the received files go, and periodic manual sorting of this folder through the file manager allows you to delete unnecessary voice messages and contact statuses that are stored automatically.

Use of cloud storage and memory cards

Modern Xiaomi smartphones are often devoid of a microSD card slot, making cloud technology the only way to expand storage: Integration with Google’s ecosystem allows you to use Google One to store photos, documents and backups, freeing up local space.

If your device supports memory cards (usually entry-level and mid-level models), you can transfer some of the data to them. SD-It's better to upload photos, music and documents to the map for safety and speed.

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Use the Smart Cleanup feature in Google Files app. It automatically prompts you to delete screenshots over 30 days and blurry photos, which is especially convenient for lazy users.

Sync settings require a smart approach. Make sure sync is only done over Wi-Fi so you don't waste mobile traffic. In the Google Photos app, enable the Save Space option, which replaces the originals on the device with compressed copies after successfully uploading to the cloud.

For users working with large amounts of data, the use of USB-OTG flash drives is important. By connecting an external drive through the Type-C adapter, you can instantly transfer archives of movies or projects without removing them from your phone forever.

Radical measures: Resetting and formatting

When software cleaning methods fail and the phone continues to signal overflow, the final frontier is a complete factory reset, which removes everything from contacts, texts, apps, photos and settings, returning the phone to the “out of the box” state.

Settings → About the phone → Reset settings → Erase all data

Before doing this, it is critical to create a full backup. Use Mi Cloud or local saving to your computer via Mi PC Suite (or similar). Once reset, the phone will work as quickly as possible, since the file system will be completely free of fragmentation and errors.

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Full reset is a last resort that solves 99% of memory problems but requires a mandatory data backup.

There is also a less radical method of formatting the internal drive through Recovery, but on current versions of MIUI with data encryption, this is equivalent to a complete reset. If after a reset, the memory fills up on its own without installing applications, this can indicate a hardware malfunction of the memory controller or a virus infection.