How to Clean Cache on Xiaomi Redmi Note 4: The Complete Guide

Xiaomi Redmi Note 4 is a well-deserved budget legend, but even such a reliable device eventually starts to work slower. The main reason for the decline in performance and the appearance of errors in the work of applications is often a crowded system cache. These are temporary files that accumulate during the use of the gadget and occupy valuable internal space.

Users often notice that the phone is slowing down and apps are flying out or opening for a long time. Cache cleaning is not just a way to free a couple of gigabytes, but a necessary preventive measure for the stable operation of the MIUI operating system. In this article, we will discuss all the available ways to delete temporary files, from the regular system tools to advanced methods through the engineering menu.

Before you start taking action, it is important to understand the difference between app data and cache: Deleting the cache is safe and will not result in the loss of your personal photos or contacts, but may require re-authorization in some services.

What is cache and why it should be removed

Cache is a buffer memory area where temporary data is stored for quick access. When you open a browser, it stores images and scripts of sites so that the next time you visit the page loads instantly, but over time, this data becomes obsolete, takes up space and can conflict with new versions of programs.

Redmi Note 4 owners are more likely to experience memory shortages because of the limited storage capacity in the model, cache overflows that cause the system to lack resources to create new temporary files, causing disruptions, and regular cleaning helps keep the performance high.

⚠️ Warning: Don't confuse cache cleaning with a full Hard Reset.Cache removal is safe, while resetting will destroy all your personal data without the ability to recover.

There are two main types of cache: system and user cache. System cache is required for the MIUI shell to work, and custom cache is created by installed applications. Both types of cleaning are recommended for complex device optimization.

Cleaning the cache through smartphone settings

The easiest and safest way to free up space is to use Xiaomi’s built-in tools, and the manufacturer has a user-friendly memory management interface that is accessible to everyone, and you need to open the standard Security app with a shield icon to begin with.

Inside the app, find the Cleanup section. The system will automatically analyze the device and show the amount of junk files. Click the Clean button to delete temporary files. This method only removes surface debris, but does not affect the deep cache of the applications.

For more details, go to Settings → Memory. Here you will see detailed statistics on storage usage. Click on "Cache Data" and the system will prompt you to clear it. Confirm action, and the cache files will be deleted from all programs at once.

The use of regular MIUI tools is preferable for inexperienced users, because the risk of removing something extra is reduced to zero, but this method is not always effective in serious system errors, in which cases deeper intervention is required.

Using Recovery Mode for Deep Cleaning

Recovery mode is a special diagnostic interface built into the firmware of the smartphone, which allows you to perform operations with the system before it boots, and to enter this mode on the Redmi Note 4 you need to turn off the device completely.

After turning it off, press both the volume button and the power button at the same time. Hold them until the Mi logo appears, then release the power button, while continuing to keep the volume. The menu uses volume buttons to navigate and power buttons to select.

Find Wipe Data and select Wipe Cache, and the system will warn you of the consequences, but as we've already found, the cache is temporary. Confirm the action. Once you've finished, select Reboot to reboot.

⚠️ Note: In the Recovery menu, choose Wipe Cache carefully. The Wipe All Data item will delete all your photos, contacts and applications irrevocably.

This method is especially useful if the phone is getting stuck during the boot phase or can't start the operating system normally.Cache clearing in Recovery often solves problems with a "bootloop" (cyclic reboot).

Clearing the cache of individual applications

Often the problem is not with the system, but with a specific “heavy” application, such as YouTube, Telegram or Instagram. These programs accumulate gigabytes of data. To clean them, go to Settings → Apps → All applications.

Find the program you want and click on it. Select Memory or Storage. You'll see two buttons: Clear cache and Clear everything. One deletes temporary files, the other resets the app to the "just out of the store" state.

For instant messengers like WhatsApp or Viber, it’s best to use the built-in cleaning tools inside the app itself to keep your correspondence history intact. In the chat settings, look for “Data Use” and clear your media files.

Regularly checking heavy apps helps keep space under control, especially for models with 32GB of internal memory, where space ends up very quickly.

Memory analysis and file type table

Understanding what is taking up space helps you manage memory more efficiently. In Android, files fall into several categories. Below is a table explaining the difference between them and the safety of deleting them.

Using this table, you can make informed decisions when cleaning. Deleting these applications requires caution, whereas the cache can be touched safely. Always check what you are going to delete.

You can use third-party tools to visually analyze the space, like DiskUsage or the built-in memory analyzer, to show you a map of your storage, where the largest folders are highlighted in large colors.

Automation of cleaning with scripts

For advanced users with Root rights, it is possible to automate the process, and with special scripts, you can set up automatic cache cleaning every time you reboot the device, which requires installing a task manager or specialized modules.

One way to do this is to use the ADB command line from your computer, and if you plug your phone in debugging mode, you can execute a command to force clean, which is useful for mass processing or deep diagnostics.

adb shell pm trim-caches 999999999

This command instructs the package manager to free up space by trimming caches. The number indicates the desired number of free bytes. Be careful when typing commands, an error can lead to unstable operation.

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Use the Invisible mode in the browser to view heavy content, if you do not want to clog the main browser cache with unnecessary pictures and videos.

Automation is useful, but it requires initial setup. For most users, manual cleaning once a month is enough. However, if you install a lot of test applications, automation will save you time.

Frequent questions and problems with cleaning

When you service Redmi Note 4, you often experience typical situations, like when you clean the cache, the gallery can recreate the thumbnails of the photos, which will temporarily load the processor, which is normal behavior.

Sometimes the cache clearing button in the settings may be inactive (grey), which means that there are no temporary files at the moment, or the system is busy with background processes.

To sum up, the Xiaomi Redmi Note 4 is a powerful device that requires minimal maintenance, and regular memory hygiene will keep it alive and fast, and use the methods described in this way depending on your situation.

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Integrated approach: combine a regular cleaning once a week with a deep cleaning through Recovery once every six months for maximum performance.