How to Clean Cache on Xiaomi Redmi 9T: The Complete Guide

Redmi smartphones are known for their excellent price-performance ratio, but even powerful hardware eventually begins to need maintenance.The Redmi 9T model, equipped with a Snapdragon 662 processor and a MIUI shell, is no exception: the accumulation of temporary files can significantly slow down the interface and run “voracious” applications.

Users often face a situation where vacant storage space suddenly runs out and the system starts to work with delays. In most cases, the culprit is an overgrown cache of applications and system services that is not deleted automatically. Understanding how to properly manage this data is key to a long and stable operation of your device.

In this article, we will take a look at all the cleaning techniques available, from standard MIUI tools to advanced application-specific techniques, and learn to distinguish secure files from mission-critical data, so you can avoid accidental loss of information.

What is cache and why clean it on Redmi 9T

Cache is a memory area where applications and systems store temporary data to speed up their work. When you open a website in a browser or flip through a social network feed, the device stores copies of images, scripts and other elements so that when you re-use them, you can download them instantly, rather than download them again, which saves traffic and reduces the load on the processor.

But there's a downside to this mechanism: over time, the cache can grow to gigabytes, taking up precious space in the internal drive. In older versions of Android, there was a "clean all" button, but in modern shells like MIUI 12 or MIUI 13 based on Android 10/11, the approach has become more selective. The system tries to manage memory itself, but manual control is often necessary.

• 🚀 Accelerate application launch by removing conflicting temporary files.
• 💾 Freeing up internal space to install new programs or save photos.
• 🔋 Reducing the load on the processor, which can positively affect autonomy.

It’s important to understand that cleaning the cache doesn’t delete your personal data, logins or passwords.It’s only temporary information that the app can recreate when needed. Regular maintenance helps keep the Redmi 9T in good shape, especially if you’re actively using heavy apps.

Use of the built-in "Security" application

The easiest and safest way to remove system debris is to use Xiaomi’s regular tool. MIUI shell comes pre-installed with the Security app, which has access to all the necessary system functions and can safely delete unnecessary files.

To get started, run the app through a menu or find it on your desktop. The green Speed button will scan RAM, but we're interested in cleaning the storage. Click on the Cleanup icon (usually looks like a broom), and the system will conduct a deep file analysis.

⚠️ Note: When using Deep Clean, carefully monitor which files are tagged for deletion. Sometimes the system may suggest clearing old screenshots or uploaded documents that you still need.

After scanning, you will see a list of categories: “Junk”, “Large files”, “Unused applications”. Click on the “Clean” button in the garbage section. The system will request confirmation, then delete temporary update files, ad cache and remnants of remote programs.

This method is the most recommended for ordinary users, as it eliminates the risk of deleting system files necessary for Android to work.

Manually cleaning the cache of individual applications

Sometimes the problem isn't with the junk, but with a particular app that's swelling to an incredible size, and social networks like Telegram, Viber, or Instagram are known to store a huge amount of media in cache, even if you've already viewed it.

To clear the cache of a particular program, go to the Settings menu and select the App. Next, click All Apps and find the desired program (for example, YouTube or Chrome) in the list.

You will see two main buttons: Clear and Clear All. We are interested in the first button - Clear (or Clear Cache)

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In the Telegram app, it is better to clean the cache through the settings of the messenger itself: Settings → Data and memory → Memory Use → Clear the cache. There you can configure autodeletion.

Regularly checking heavy apps allows you to keep the system clean without having to reset your phone, especially for Redmi 9T, which, despite its good storage capacity, doesn’t like to have the storage full.

Cleaning the cache through recovery mode (Recovery Mode)

There is a deeper level of cleanup available through the Recovery menu, which allows you to delete temporary files accumulated by the system during updates or crashes that are not visible in normal operation.

To enter this mode, you need to turn off the Redmi 9T smartphone completely. Then press the volume button and the power button at the same time. Hold them until the Mi logo appears, then release the power, but continue to keep the volume until the menu appears.

Volume Up + Power Button → Recovery Mode → Wipe Cache (if available)

The menu uses volume buttons to navigate, and power buttons to select. Find Wipe Data. Within this menu, there is often (but not always, depending on the version of MIUI) a Wipe Cache option. If you don't, don't try Wipe All Data, because it's a complete reset.

⚠️ Attention: In new versions MIUI Recovery may not have a separate cache cleaner option. Be very careful: selecting "Wipe All Data" will delete all your photos, contacts and apps.

If you find a cache cleaner, confirm the action. Once the process is complete, select Reboot to restart the system, which is effective at eliminating software errors after a major firmware update.

Storage analysis: File type table

For effective memory management, it is important to understand which files are taking up space. Non-universe space is "junk." Below is a table that helps classify data on your Xiaomi Redmi 9T.

Analyzing the storage through Settings → About Phone → Storage, you can see a detailed diagram. Pay attention to the “Other” section – often there are hidden files of messengers that are not determined by the system automatically.

Third-party utilities: whether they should be used

There are thousands of memory cleaner apps in the Google Play marketplace: Clean Master, CCleaner, Files by Google. Should you install them on Redmi 9T if you have built-in tools? Most of the time, not, but there are nuances.

Third-party cliners often work more aggressively, forcibly closing background processes, which in the short term frees up RAM, but forces the system to immediately restart services, consuming battery power, and these applications consume resources and display advertising.

• 📉 Aggressive cleaning of RAM can lead to unstable system operation.
• 🔋 Continuous monitoring of background processes increases energy consumption.
• 📂 Some utilities can delete the right files if they are not configured correctly.

The only exception is Files by Google, which is secure, non-intrusive, and does a great job of finding duplicates and large forgotten files, but MIUI is good enough to clean up your cache.

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The built-in MIUI tools are optimized better than third-party counterparts and do not require additional software installation, which is safer for the system.

Prevention and useful tips for optimization

To avoid returning to the issue of cache cleaning on Xiaomi Redmi 9T too often, you should adhere to a few simple rules of operation. Digital hygiene helps to maintain the performance of the device throughout its life.

First, delete unused apps regularly, even if you don't use them, they can update in the background and accumulate cache. Second, set up automatic cleaning in the Security app: go to the cliner settings and activate the Clean Automatic function when you reach a certain occupancy threshold.

⚠️ Warning: Do not store hundreds of photos and videos in a gallery without backing up. Use cloud services or periodically transfer media files to your computer, freeing up internal memory.

It is also recommended to periodically restart the smartphone.A simple reboot once a week allows the system to reset the hanging processes and clear temporary buffers that are not removed in normal operation.

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Use Developer Mode to limit background processes if your phone is slow, but only do so if you understand what each setting is responsible for.