Xiaomi smartphones, especially the popular Redmi 7 and Note 7 models, are slowing down over time. The main reason for the performance decline is often overflowing internal memory and a lack of RAM. Users notice that apps take longer to open and the system hangs when switching between tasks. It is a natural process of accumulation of digital debris that requires regular intervention.
In Android, and in the MIUI shell in particular, files are not always completely deleted after uninstallation. Residual code, messenger cache and error logs take up precious gigabytes. In addition, background processes can eat up all available RAM without leaving resources for current tasks. Understanding the storage structure is the first step to speeding up your device.
In this article, we will discuss effective cleaning methods that are safe for the system: you will learn to distinguish between memory types, delete hidden files and adjust automatic optimization. Proper resource management will allow you to extend the life of your gadget without having to buy a new one.
Memory Analysis: What Takes Place
Before you take any action, you need to understand what exactly is clogged storage of your Redmi 7 or Note 7. Android provides built-in tools for detailed analysis. Go to Settings → Storage to see the data distribution chart. Here you can see applications, images, videos, audio files and system data.
Often the lion's share is occupied by messengers like WhatsApp or Telegram, which store all received media files automatically, app cache is temporary data that speeds up the program, but over time grows to giant sizes, and also a significant place can take folders with system updates or remote games.
RAM works differently. It's designed to temporarily store running processes. When you fold an application, it often stays in the background. On models with 3 or 4 GB of RAM, this quickly leads to a shortage of resources. The system begins to force the background tasks to close, which causes active applications to reboot when they return to them.
For deep analysis, you can use the built-in Security app, which scans the device and suggests removing the garbage, but you should take these recommendations critically. Sometimes, useful files that you plan to use fall under the cleanup. Always check the contents before confirming deletion.
Basic cleaning with built-in MIUI facilities
The MIUI shell is equipped with powerful tools to maintain the system. The standard cleaning procedure is available to every user without installing third-party software. Open the Security app (green zipper icon) and select Cleanup. The system will run a quick scan and show the amount of files that can be deleted.
This method removes temporary files, APK installer residues, and advertising debris. However, it does not affect the cache of heavy applications, considering them important data. For a deeper cleaning, click on the broom icon in the main menu of the Security app and select Deep Clean. Here you can find large files, duplicate photos and rarely used applications.
☑️ Checklist of basic cleaning
You should also consider managing startup. Many applications enroll themselves in start-up systems. To limit their impact, go to Settings → Applications → Permissions → Autorun. Only leave programs that need to be running all the time (such as an alarm clock or instant messenger).
⚠️ Note: Do not delete files with the.obb or.data extension in the Android folder manually unless you are sure they belong to a remote game.This may result in loss of progress in current games or launch errors.
Manual deletion of cache and application data
The most effective way to free up space is to manually clean the heavyweights, most commonly social media and navigators. Go to Settings → Apps → All apps. Sort the list by memory size. Select an app like YouTube or Instagram, and click Memory.
Here you will see two buttons: Clear Cache and Clear Everything (or Reset) and the cache cleanup is safe, it will delete temporary images and videos, but save your logins and settings. The Clear Everything button will return the app to its state immediately after installation, requiring re-authorization.
For messengers like Telegram, cleaning through Android settings may not be enough. Better use the built-in features of the app itself. On Telegram, go to Settings → Data and Memory → Memory Use → Clear cache. This allows you to delete downloaded media but leave text messages.
Why is the cache taking up space again?
If you rarely use an app but it takes up a lot of space, consider removing it. Modern versions of MIUI have a dual app feature that creates a copy of the social network. If you don't use the second account, delete the clone, as it consumes resources in vain.
Working with RAM and background processes
The RAM (RAM) in the Xiaomi Redmi 7 and Note 7 is limited, so it is important to manage running processes. Unlike internal memory, RAM is cleared when rebooted, but it fills up quickly during operation. MIUI aggressively unloads background tasks, but sometimes this mechanism fails.
To force cleanup, use the menu of running apps. Swipe up from the bottom of the screen (or press the menu button) to see a list of open windows. Click on the cross or Clean button at the bottom of the screen. This will free RAM instantly. You can also pin important applications by pulling the window down (locks will appear) so that the system does not close them when cleaning.
There is a hidden feature for advanced users, which is the limitation of background processes. To activate it, you need to click seven times on the build number in About Phone, turning on Developer Mode. Then in Advanced Settings → For developers, find the limit of background processes. Set the limit of No more than 2 processes.
| Type of memory | Volume in Redmi 7/Note 7 | What's up? | How to clean |
|---|---|---|---|
| Internal (ROM) | 32/64/128GB | Photo, applications, system | File deletion, reset |
| Operational (RAM) | 3/4GB | Launched annexes | Closing tabs, rebooting |
| Cash system. | Dynamic | Temporary logs, updates | Cleaning through Security |
| Application memory | Depends on the app. | User data, cache | Settings → Applications |
Rebooting the device is the easiest and most effective way to clear RAM. Many users stay on their smartphone for months, leading to an accumulation of errors in RAM. Do a full cycle of turning off and on at least once a week.
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Use the Acceleration widget on your desktop, and one tap on it starts cleaning RAM and closing background processes faster than manually logging into the menu.
Using an SD memory card to expand
Redmi 7 and Note 7 support microSD card installation, which is the perfect solution for storing photos, videos and music so that you don't have to take up internal memory. Once you install the card, the system will suggest using it as portable storage, and choose this option for maximum compatibility.
To transfer existing files, use the built-in Explorer (yellow folder). Go to internal memory, select a folder (for example, DCIM For the photo, select the files and select Move. Specify the path to SD-After transferring, delete the originals from the internal memory.
Some applications allow you to change the location of data storage in your settings, for example, in the camera you can specify the saving of a photo immediately to the map. In navigators (Yandex.Navigator, Google Maps), you can download offline maps to the map. SD-map that saves gigabytes of internal space.
⚠️ Note: Do not remove the memory card while the phone is running.This can cause file damage or even system failures if the card stores application data.
Radical methods: Reset to factory settings
If no methods help and the phone is unstable, the last resort is a full reset, which will return the Xiaomi Redmi 7 or Note 7 to the state of the box, all personal data, contacts, photos and installed applications will be permanently deleted.
Before starting the procedure, make sure to back up. Use Mi Cloud or sync with Google Account. You can also transfer important files to your computer. Make sure that the battery is at least 50%.
To perform the reset, go to Settings → About Phone → Settings Reset → Erase all data. The system will ask you to enter the unlock password and the Mi Account password (anti-theft protection). Once confirmed, a process will begin that will take a few minutes.
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A complete reset is the only way to remove system debris and viruses that may have penetrated deep into parts of the system.
Prevention and useful advice
To prevent memory problems from returning too quickly, follow simple rules of operation, do not install dubious applications from unverified sources, and regularly check the Downloads folder, as garbage often accumulates from there.
Use lighter versions of apps (Lite) if they are available. For example, Facebook Lite or Instagram Lite consume less resources and take up less space. You can use a browser to watch videos instead of a heavy YouTube app.
Turn off automatic app updates in the Play Market, leaving it only via Wi-Fi, or update manually. Memory Extension (if available in your version of MIUI) uses some of the internal memory as virtual RAM, which can slow down the drive. On older models like Redmi 7, it is better not to activate this feature.