Xiaomi smartphone owners often face a situation where once-fast device starts to work slower, and free space in memory disappears rapidly. Redmi Note 8, despite its popularity and reliability, is not immune to the accumulation of temporary files that eventually turn into digital garbage. This data can take up gigabytes of space, causing interface lags and unstable programs.
Cache cleaning isn't just about deleting files, it's about returning the device to its original responsiveness. In the Android operating system that runs the MIUI shell, caching is used to speed up the loading of frequently visited pages and launch applications. However, when this mechanism fails or the amount of data becomes excessive, the benefits are replaced by performance harm.
In this article, we will take a look at all the cleaning methods available, from standard system tools to advanced methods through the engineering menu. You will learn to distinguish between types of temporary files and understand which ones can be deleted without fear of losing important data. Systematic cache cleaning every 2-3 weeks extends the life of flash memory on the Redmi Note 8.
What is cache and why clean it on Redmi Note 8
Cache is a region of RAM or permanent memory reserved for temporary data storage. When you launch an application for the first time, the system downloads the necessary resources from the disk, which takes time. When you restart this data is taken from the cache, which happens instantly. However, on the Redmi Note 8, over time, these files can become corrupted or redundant.
The accumulation of outdated or corrupted temporary files often leads to specific errors, such as an application that can fly out immediately after opening or freeze during the boot phase, and in this case, cleaning the cache forcibly forces the system to recreate fresh, correct copies of the necessary data, eliminating software conflicts.
It is important to understand the difference between the application cache and the system cache: the first stores the data of specific programs (photos in the social media feed, video thumbnails), the second - temporary files of the MIUI operating system itself.
- 🚀 Accelerating the launch of heavy games and applications by removing broken fragments.
- 💾 Freeing up internal storage, which is critical for stable Android.
- 🔋 Reducing the load on the processor, which has a positive effect on battery life.
It’s worth noting that blindly deleting all temporary files can have the opposite effect: If you just cleared the cache, the first application launch will take a little longer than usual, as the system will have to re-form the temporary database. This is normal behavior that should not cause concern to the owner of Xiaomi.
Cleaning the cache through the standard Security app
The easiest and safest way to free up space on the Redmi Note 8 is to use a built-in system tool. The MIUI shell comes pre-installed with a Security app that combines antivirus and memory cleaner, a method ideal for regular maintenance of the device.
To get started, look for a green shield icon on your desktop and run it. Press the big Cleanup button. The system will scan and suggest that you delete the junk files. However, for deeper work, you need to go to the extended menu, where detailed memory analysis is available.
☑️ Checking before cleaning
Inside the cleaning section, you'll see categories of files that you can delete, and pay special attention to the "Cash" section, where the system will show the amount of temporary data, and by clicking on it, you can select the specific applications whose cache you want to erase without touching important logins and passwords.
- 🛡️ Process safety guaranteed by smartphone manufacturer.
- ⚡ Quick access to basic cleaning functions in one click.
- 📊 Visualization of occupied space by category.
⚠️ Note: The Security app also has a Memory Acceleration feature" (RAM). Not to be confused with cache cleaning. RAM only temporarily closes the background processes, but it doesn't free up space in the storage where the main debris lies.
Manually cleaning the cache of individual applications
Sometimes the problem isn't with the system as a whole, but with a particular app that mismanages its temporary files. For example, YouTube, Telegram, or Instagram can inflate their cache to a few gigabytes, storing thousands of videos and images viewed. On the Redmi Note 8, with its limited amount of internal memory, this is critical.
To do the manual cleaning, go to the Settings menu and find the Apps section. Select All Apps. In the list that opens, find the program you want (like the Chrome browser) and tap it to open the management page.
Inside the app menu, you'll see a Memory button or two buttons: Clear cache and Clear everything. The first one deletes only temporary files, the second one resets the app to "as after installation," removing logins and settings. Be careful when choosing.
Which apps take up the most space?
For Xiaomi system applications like Gallery or Explorer, the procedure is similar. If you notice that the Gallery has a long time opening albums or not seeing new photos, cleaning its cache often solves the problem without losing the photos themselves.
- 🎯 Spotted solution of problems with hanging programs.
- 🗑️ Ability to free up a lot of space without removing the application itself.
- 🔒 Saving user data when selecting the option "Clear cache".
Using Developer Mode and Debugging
For more advanced users, the Redmi Note 8 provides access to hidden features through developer mode. This not only allows you to clear the cache, but also controls how the system uses it. Activating this mode requires several sequential actions.
Go to Settings → About Phone. Find the MIUI Version bar and quickly click on it 7-10 times in a row until the notification “You are a developer” appears. Then a new section Additional (or immediately Advanced Settings) → For developers will appear in the main settings menu.
In this menu, we are interested in Memory or Do not use memory for caching (although the latter is better not to touch unnecessarily). A more useful feature is the ability to see current memory use in real time and forcefully stop processes that consume resources.
| Parameter | Description of function | Recommended value |
|---|---|---|
| Limit of background processes | Limits the number of working in the background of applications | Standard limit |
| Not to keep up the action | Destroys activity immediately after exit | Off. |
| Window animation | Speed of interface animation | 0.5x (for acceleration) |
Using developer mode requires caution. Changing parameters related to graphics rendering or memory management can lead to unstable interface operation. If you are not sure about the value of the parameter, it is better to leave it by default.
Cleaning through Recovery Mode (Recovery Menu)
The deepest level of cleanup is the Recovery Mode, which allows Xiaomi smartphones to clear the system’s cache (Wipe Cache) without affecting the user’s personal files (photos, contacts, apps), a powerful tool for solving serious software failures after a firmware update.
To enter this mode, you need to turn off the Redmi Note 8 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 button, continuing to keep the volume, until the menu appears.
Recovery menu (Main Menu):
Reboot
Wipe Data
Connect with MIAssistant
Safe ModeIn the menu, you navigate with volume buttons (up/down), and the choice is confirmed by the power button. You have to select Wipe Data, then Wipe Cache. Importantly, do not confuse it with Wipe All Data, which will completely reset the phone to the factory settings, removing everything.
⚠️ Attention: On new versions MIUI Entering the Recovery menu may require you to enter the unlock password of your screen or Mi Account to verify your identity.
💡
Cleaning with Recovery Mode is the most effective way to fix system errors after an update, but requires careful selection of menu items to avoid losing personal data.
Automation and third-party utilities
If manual cleaning seems too time-consuming, you can resort to automation. On the Redmi Note 8, you can configure scripts in the Mi Remote app or use third-party launchers, but specialized utilities-cleaners are the most effective, but be careful: many of them are themselves a source of advertising.
The tested options are Files by Google or SD Maid. These applications analyze the file system, find residual files of deleted programs, empty folders and duplicates. They work softer than the built-in aggressive clearer, and often find what the standard system misses.
You should also pay attention to the Advanced Cleanup feature in the built-in security application, where you can set up automatic cache cleaning when you reach a certain memory filling threshold, which will help keep Xiaomi on track without you.
- 🤖 Automatic garbage removal on schedule.
- 🔍 Finding hidden residual files after deleting programs.
- 📈 Detailed statistics of the liberated space.
Don't install dozens of accelerators at once. They'll be in conflict with each other, constantly trying to clean the same thing, which will only land your Redmi Note 8 battery. Choose one reliable tool and use it.