Xiaomi Redmi Note 4, despite its age, is still a popular device, but the lack of free storage is its main problem. Owners often face reports of overflowing memory, which leads to slowdowns, inability to install updates and performance in games. Effective cleaning requires a comprehensive approach, as standard tools are often not enough for deep cleaning of the MIUI system.
In this guide, we will examine not only basic methods of deleting files, but also advanced techniques for working with system debris that is hidden from the user's eyes. You will learn which folders can be deleted without risking stability, how to find "heavy" files that take up gigabytes, and why simple uninstallation of applications does not always free up space.
Before we take any drastic measures, we need to assess the current situation and understand what exactly occupies space. Analysis of logs and system reports shows that the lion’s share of memory on older Xiaomi models is occupied by messenger cache, residual files of remote programs and duplicate media. Systematic approach will allow you to free up to 10-15 GB of usable space without the need to buy a new memory card.
Analysis of storage occupancy through settings
The first step to clean up your memory is to analyze in detail what exactly occupies space on your Redmi Note 4. Standard MIUI tools provide enough information, but many users ignore the Storage section, relying on intuitive removal of photos. However, to find real memory eaters, you need to go to Settings → Memory and carefully examine the pie chart of the data distribution.
The system automatically sorts data into categories: apps, images, video, audio, etc. It often turns out that the Other category takes up a disproportionate amount of space, hiding browser cache, temporary update files, and error logs. Data visualization helps quickly identify problem areas that require immediate intervention.
Note the volume of system applications. Sometimes updates to Google Play Services components or the MIUI shell itself can leave older installer versions that are no longer needed, and it’s also worth checking the download folder, where APK installation files are often downloaded, which become useless ballast once installed.
- 📊 Go to the Settings menu and select Memory to view detailed statistics.
- 🗑️ Click on the category "Applications" to see the list of the most voluminous programs and their cache.
- 📂 Check the "Images" and "Video" section for screenshots and downloaded files from messengers.
- ⚙️ Use the built-in Cleanup feature in the same menu to remove obvious debris.
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A spot analysis of file categories allows you to find hidden memory reserves that are not visible when you normally browse a gallery or file manager.
Use of the built-in "Security" application
MIUI firmware preinstalled a powerful system application called Security, which includes the Cleanup module, which is not just an advertising tool, but a functional scanner that can find remnants of deleted applications, corrupted files and temporary data, and running a deep scan through this interface is the safest way for a beginner to free up space.
The app analyzes the structure of the file system and suggests removing files that have not been used for more than 30 days, or duplicate contacts. It is important not to blindly agree with all sentences, but to read descriptions carefully. For example, cleaning the messenger cache can lead to the removal of previously uploaded images from chat rooms if they were not saved to the gallery separately.
The "Acceleration" function in the same application also helps to free up RAM by closing the background processes, which indirectly affects the speed of the storage, reducing the number of temporary files created.
Why is a “Safety” Cleanup Better Than a Manual Cleanup?
It is worth noting that on Xiaomi Redmi Note 4 with Android 7.0 Nougat or higher, access rights may limit the depth of scanning of some system folders. In such cases, the application will only offer to clear the user cache. For deeper cleaning, you will need to use third-party file managers with root rights or connect to a PC.
- 🚀 Launch the Security app from the home screen or folder Tools".
- 🧹 Click on the "Cleanup" icon and wait for the system analysis to be completed.
- ✅ Carefully review the list of found garbage and uncheck important data.
- 🗑️ Click the "Clear selected items" button to confirm the operation.
Working with cache and data messengers
The most voracious apps on any smartphone, including the Redmi Note 4, are messengers: WhatsApp, Telegram, Viber. They store every photo, video and voice message viewed in memory of the device, over time, this database can grow to several gigabytes, occupying up to 40-50% of all free memory.
To clean up, you need to go to the settings of each application separately. Telegram, for example, has a built-in "Data Use" feature that allows you to clear the cache and configure autodeletion of media files. WhatsApp path is through Settings → Data and storage → Storage Management, where you can see the "heaviest" chats.
⚠️ Note: Clearing the app data (not to be confused with cache) will result in the complete removal of correspondence and media files within the program. Make sure you have a backup of chats in the cloud before clicking the "Erase Data" button in your Android settings.
Also worth looking at are the folders in the file manager where these apps save media. Often deleted files in the chat remain in /Android/media or /MIUI/gallery/cloud/cache directories. Manually checking these paths allows you to find "orphaned" files that are no longer needed but continue to occupy space.
Removing duplicates and hidden files
During active use of the smartphone, especially when sharing files via Bluetooth or Wi-Fi Direct, the Xiaomi Redmi Note 4 accumulates duplicate photos and documents. The system does not always index them correctly, so in the gallery you can see one photo, and physically on the disk lie two or three identical files.
To find these copies, the best way to do this is to use specialized analysis apps like Files by Google or the built-in analyzer in MIUI (if available in your version), which compare hash amounts of files and suggest removing the extra copies, leaving the original behind, a safe operation that can return hundreds of megabytes.
Special attention should be paid to hidden folders created by applications for advertising or temporary storage, folders with names like.cache,.temp or with strange lettering at the root of internal memory often contain garbage, but they should be deleted with caution when checking the contents.
- 🔍 Install a file manager with duplicate search function (e.g. Total Commander or Files).
- 📁 Sort files by size to find the most voluminous hidden folders.
- 🗑️ Delete files with the extension.tmp,.log and.bak, if you are not a developer.
- 📸 Check the folder "Recently deleted" in the gallery, it also takes up to 30 days to complete.
Transfer of applications and data to SD-map
The Redmi Note 4’s internal memory is limited and can only be expanded by an external microSD card. While current versions of Android limit the portability of the apps themselves, you can migrate media files, documents, and even some of the apps that support this feature, a critical step for owners of versions with 32GB of storage.
To transfer photos and videos, select the camera settings SD-The map is the primary storage. The path to transfer applications is through Settings. → Annexes → All applications → [Select the application] → Memory. → Change. If the button is active, the system will suggest moving the application to the map.
There is also the possibility of formatting a memory card as an internal storage device. SD-The card is then encrypted into the system partition, and after that, the card will not be read on other devices without formatting, and it's a great way to increase the amount of memory available to install new programs.
☑️ Preparation SD-map
Remember that the speed of applications ported to the card can be lower than when working with internal memory, especially if you use a cheap microSD card. For Xiaomi Redmi Note 4, it is recommended to use UHS-I cards to minimize delays.
Resetting settings as a last resort
If none of these methods worked and the memory continues to fill up with "system trash," the radical but effective method is a complete factory reset, which puts the phone back out of the box, removing all user data, settings and applications.
Before you do this, make sure to back up all your important data on your computer or in the cloud, and once you reset, you can't recover deleted files, it takes 10 to 20 minutes, and it requires at least 50 percent battery life.
To perform the reset, go to Settings → About Phone → Settings Reset → Clear all data. The system will warn you of the consequences. Once you restart, you will get a clean system where the internal memory will be freed up almost completely, except for system files.
⚠️ Warning: Do not interrupt the reset process or turn off the phone during formatting.This can damage the boot partition and turn the smartphone into a “brick” that requires flashing through MiFlash.
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Before resetting the settings, take out SIM-card and memory card so as not to accidentally format them or knock down the settings of the mobile operator.
Table: Comparison of cleaning methods
To make it easier to choose the best way to free up space, we have prepared a summary table comparing the effectiveness and risks of different methods for the Redmi Note 4 model.
| Cleaning method | Efficiency | Risk of data loss | Difficulty |
|---|---|---|---|
| Standard cleaning (Settings) | Low (up to 500 MB) | No. | Low. |
| Annex "Security" | Medium (1-3 GB) | Minimum | Low. |
| Clearing messenger cache | High (up to 10 GB) | Medium (history of correspondence) | Medium |
| Removal of duplicates | Medium (1-5 GB) | No (in check-up) | Medium |
| Full reset (Factory Reset) | Maximum (frees everything) | High (all data) | Tall. |
Regular maintenance of your Xiaomi Redmi Note 4 will extend its life and ensure comfortable use.Do not allow critical memory filling, as this accelerates the wear of the flash drive. Follow the recommendations, use automatic cache cleaning once a week, and your smartphone will work quickly.
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The combination of manual cleaning of messengers and periodic use of built-in MIUI tools gives the best balance between free space and the safety of personal data.