The Redmi Note 7, despite its venerable age, remains a popular device, but over time, even powerful hardware begins to have difficulty processing accumulated data. Users often notice that the interface becomes less responsive and applications run longer than usual. One of the main reasons for this behavior is a cache-filled drive that requires regular maintenance for stable operation.
Clearing temporary files is not just a way to free up precious gigabytes, but a necessary procedure to fix software failures. In the Android operating system and the MIUI shell, this data is created to speed up access to frequently used information, but when over-accumulated, it begins to work against the user. Dalvik's system cache can take up up to 30% of free space if it is not reset after major system updates.
In this article, we'll look at all the cleaning techniques available, from built-in tools to advanced engineering menus. You don't have to be a programmer to do these things, just follow the step-by-step instructions. We'll look at which files can be deleted without fear, and which ones should be left unattended so as not to disrupt the device.
What is cache and why it is filled on Redmi Note 7
Cache is a memory area where temporary data from apps and system services is stored. When you run Instagram or YouTube, your smartphone stores thumbnails of images, video snippets and scripts so that when you re-access, it downloads instantly, but over time, this data becomes obsolete, takes up space, and can contain errors that cause programs to crash.
On Xiaomi devices, the situation is aggravated by the active work of the background processes of the MIUI shell. The system constantly collects telemetry, updates widgets and indexes files, creating many temporary records. If you do not prevent, the file system fragments, which leads to a noticeable decrease in the speed of reading and writing data to flash memory.
⚠️ Warning: Don't confuse the app cache with important data like correspondence or saved passwords.Cache clearing is usually secure, but cleaning up the app's "data" will completely reset it to factory settings.
Understanding the nature of temporary files helps avoid installing dubious software-cliners, which are often themselves a source of advertising and information collection. Android’s built-in tools do this just as well as, and sometimes more effectively than, third-party counterparts. Regular maintenance allows you to extend the life of the drive, reducing the number of overwrite cycles.
Use of the built-in "Security" application
The easiest and safest way to clean up Redmi Note 7 garbage is to use a regular app preinstalled by the manufacturer, which has deep access to system partitions and knows which files can be deleted without risking stability. To start the procedure, look for an icon on your desktop called "Security" and a green shield.
Once you open the app, click on the Cleanup button, automatically scan the device, detect temporary files, remnants of deleted programs and advertising debris, and the analysis process takes 10 to 30 seconds depending on the amount of information accumulated and the speed of the drive.
☑️ Checklist of proper cleaning
It is important to note that the standard cleaner sometimes skips the cache of some social networks. For a more thorough check, you can go to the Deep Clean section, where the utility will prompt you to remove large files, duplicate photos and unused applications. This helps to free up a significant amount of space that is often hidden from the user’s eyes.
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To automatically clean up garbage, turn on the “Schedule Cleanup” function in the Security settings of the application, selecting the frequency once every 3 days.
Manually cleaning the cache of individual applications
Sometimes the problem is not in the system, but in a particular “gluttonous” application, such as TikTok or Telegram. In such cases, manual intervention is required through the settings menu. Go to Settings → Applications → All applications to see the full list of installed software.
Select the app you want from the list and click on Memory, and you'll see two buttons here: Clear and Clear Everything. The first one deletes only the temporary cache, leaving your logins and settings, and the second one completely resets the app as if you had just installed it.
For most users, the best option is to use the “Clear” button, which allows you to solve problems with the hanging of a particular service without losing authorization in the account, and if the application does not work correctly even after cleaning the cache, then it makes sense to perform a complete data reset.
| Type of data | What's removed | Impact on the account | Recommended action |
|---|---|---|---|
| Cash. | Temporary files, thumbnails | No change. | It is safe to remove regularly |
| Data data | Settings, logins, databases | Full exit. | Only when it fails. |
| Memory. | Cache and data sum | Depends on choice. | For volume analysis |
| By default. | File Opening Settings | No change. | Resetting as necessary |
Special attention should be paid to messengers, as they can accumulate gigabytes of media files in their internal directories. In some cases, such as WhatsApp, it is better to clean through the internal menu of the application itself, to select specific chats to free up space.
Cleaning through the Recovery Engineering Menu
For advanced users who want to perform a deep cleaning of the system cache, the Recovery menu is designed. This method is especially useful after a firmware update or if the smartphone has begun to behave unstable. To enter this menu, turn off the Redmi Note 7 completely and press the power and volume buttons at the same time.
When the Mi logo appears, release the power button, but keep holding the volume button until the main menu appears. Navigation is done with volume buttons (up/down), and the choice is confirmed by the power button. You need to find the Wipe Data item, and then select Wipe Cache.
⚠️ Note: In the Recovery menu, select Wipe Cache carefully. If you accidentally select Wipe All Data, all your personal files, contacts and photos will be permanently deleted.
Once the command is selected, the system will request confirmation, often requiring you to type in the word “yes” or simply press “Confirm.” The cleaning process takes a few seconds, after which a message will appear on the screen about the successful completion, then select Reboot to restart the device in normal mode.
What to do if the Recovery menu does not open?
This method does not affect user files, photos and contacts, as it works exclusively with the system partition of the cache, and is one of the most effective ways to eliminate errors that occur after unsuccessful updates or malfunctions in the operating system.
Cleaning DNS cache and browser to speed up the Internet
Slow loading of pages on the Internet is often not due to connection speed, but to a crowded cache of the DNS or the browser itself. Browsers save copies of the pages visited so that they load instantly on a repeated visit, but old versions of sites can conflict with new ones.
To clear the DNS cache on Android version 9 and higher (which is relevant for Redmi Note 7), you can use the hidden settings menu. Go to Settings → Connection and Sharing → Private DNS. Try switching the mode to “Switched off” and then return “Auto” or register the dns.google address, which often solves access problems.
Clean up Chrome or the built-in Mi Browser is done through the settings of the app itself. Open the three-dot menu, select History → Clear History. Here, select the All-Time time range and tick “Images and other files saved in cache.”
And remember the Google Play store cache, which often causes errors when downloading or updating apps: Go to your phone's settings, find the Google Play Store app, go to the memory section, and click Clear Cache, which is a safe and often solves problems with installing software.
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Comprehensive cleaning of the DNS cache, browser and Google Play eliminates 90% of problems with slow loading of content and application installation errors.
Automation and third-party utilities
While embedded tools are usually enough, some users prefer to automate the process. There are time-tested utilities like Files by Google or SD Maid that have deep access to the file system. They are able to find "residual" files that the standard MIUI cleaner often ignores.
When using third-party software, it is important to provide only the necessary permissions, do not give the client application access to your contacts or microphone if its main function is to work with file memory, be careful with aggressive cleaning settings that can remove the authorization cache in important banks.
Automating through built-in MIUI scripts allows you to run cleaning on a schedule or at a certain level of battery power, which helps keep your smartphone in good shape without constant manual control, but remember that no program will replace periodic manual checks of what exactly occupies space on your device.