Xiaomi Redmi Note 7, which was released a few years ago, is still popular due to its excellent price-performance ratio. However, over time, users face a nasty problem: internal storage becomes overcrowded, the system starts to work slower, and applications fly out. This is a natural process, as modern programs and multimedia files require more resources.
Freeing up space on your device isn't just about removing old photos; it's a comprehensive approach to managing your Android file system and your MIUI shell. If you ignore memory overflow, your phone may start to freeze or stop writing new data altogether. In this article, we'll look at proven and safe cleaning methods that can help you get your gadget back to speed.
Before we start taking drastic measures, we need to understand what exactly is taking place. Often the culprits are not the apps themselves, but the cache they have accumulated or forgotten videos in messengers, and proper diagnosis is the first step to successful optimization.
Analysis of storage occupancy through settings
The first thing you need to do is turn to the built-in diagnostic tools. MIUI It provides a fairly detailed data on disk space usage. Go to the Settings menu. → Memory to see the visualization of the occupied space, and the system automatically categorizes the data: applications, images, video, audio, and so on.
Notice the Other section, which is often where heavy files are hidden that the user has not identified, which can be remnants of deleted programs or archives, and file structure analysis allows you to understand where to direct the cleanup efforts.
Don't ignore the color indicators on the memory menu. Red zone means there's a critical lack of space where the system can function in an unstable way. Yellow zone is a signal that it's time to prevent it. Green zone is a comfort level of free memory.
⚠️ Warning: Do not attempt to delete files from system folders through root-right file managers without full confidence in their purpose.
The statistics are updated in real time, so after deleting any file, it is recommended to return to this menu to monitor the result, which helps to track the dynamics of the space release.
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The built-in memory analyzer in MIUI is the safest tool for primary diagnostics, which does not require the installation of third-party software.
Use of the built-in "Security" application
Each Xiaomi smartphone has a Security system app preinstalled, a powerful system maintenance harvester that includes Cleanup. Launch the app and click on Cleanup. The scanner will analyze the device for temporary files, residual debris and APK installer packages.
After scanning, the system will prompt you to delete the files you found, and be careful: sometimes the cache section may contain data you want to save, such as drafts in messengers, and the Security app allows you to selectively approach the process by ticking only unnecessary categories.
The Deep Cleanup section inside this app deserves special attention, and you can find duplicate photos, large files, and rarely used apps, a thinner tool than a simple quick cleanup.
Regular use of the built-in cleaner helps keep the system on track, but don’t fanatically run it every hour, as the cache of some applications (such as maps or browsers) speeds up their operation when they are re-launched.
- 🧹 Click the Clean button to remove obvious debris.
- 📂 Go to the Deep Cleanup section to find duplicates and large files.
- ⚙️ Check the scan settings to exclude important folders from the cleanup.
Cleaning up cache and data heavy applications
The most voracious consumers of memory are traditionally social networks and instant messengers. Telegram, WhatsApp, Viber and Instagram tend to accumulate gigabytes of media files. To make room, it is not enough to simply delete an application - you need to clean its internal storage.
Go to Settings → Apps → All apps. Find a heavy app (like Telegram) on the list. Inside the app menu, you are interested in Cache and Memory. Clearing the cache is secure and deletes temporary files. Cleaning up the data will reset the app to a “just installed” state by removing correspondence (if there is no backup) and logins.
What is the difference between cache and data?
For instant messengers, it is often more effective to use their own built-in storage settings. For example, on Telegram, you can set up automatic media deletion or clear the cache right in the Settings → Data and Memory → Memory Use section. It is more flexible than the system tool.
Remember to check the Downloads folder, which often automatically saves documents you no longer need, and the MIUI file manager allows you to sort files by size, making it easier to find heavyweights.
- 📱 Go to the settings of a specific “heavy” application.
- 💾 Select the “Clean Cache” option for safe garbage removal.
- 🗑️ Use Clear Data only if you are ready to reconfigure the application.
- 📸 Check the built-in cleaning settings in the messenger itself.
Work with Gallery and Cloud Services
Photos and video are the biggest enemy of free memory on the Redmi Note 7. The camera takes high-quality shots that take up a lot of space. Videos at 1080p or 4K resolution can eat up gigabytes in a few days of active shooting.
The most effective way to combat this is to use cloud storage. Google Photos or Yandex.Disk allows you to automatically upload images to the cloud and then delete them from your phone's memory. Google Photos' "Free Space" feature automatically finds and deletes pictures that are already stored in the cloud.
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Use HEIC or HEVC format for photos and videos if your model supports it. Quality will remain high and file size will be reduced by 2 times.
You also have to manually view the Recycle Bin folder in the gallery, and deleted photos are often stored there for another 30 days, taking up space, and cleaning the basket is a mandatory step in the complete cleaning.
If you don't use the cloud, you can migrate your archives to your computer or external hard drive on a regular basis, and storing terabytes of memories on an old smartphone's built-in storage device is inefficient and risky in terms of data security.
| Storage method | Pluses | Cons | Recommended level |
|---|---|---|---|
| Internal memory. | Quick access, offline work | Limited volume, risk of loss in case of breakdown | Only current photos |
| MicroSD card | Cheap, easy to move | Slower than internal memory, it can break | Photo/video archive |
| Cloud (Google/Yandex) | Access from any device, protection from loss | Need Internet, paid tariffs for large volumes | Main backup |
| Computer/HDD | Full control, free of charge. | No access to the phone without connection | Long-term archive |
Removing unnecessary apps and games
Often, we install five-minute games or apps for one particular case, and then we forget about them. They may not be active, but they take up space and maybe they work in the background. Go through the list of all the installed programs.
MIUI has a handy feature to sort apps by frequency of use. Go to Settings → Apps → All apps and sort the list by size or by date of last use. This will immediately show the ballast, which can be painlessly removed.
☑️ Verification of installed applications
Pay special attention to games. Modern projects can take up 2 to 5 GB of storage. If you pass a game or abandon it, be sure to delete it. Progress data is often stored in the cloud (Google Play Games or developer account), so you can continue from the same place after you re-install.
Some system applications (e.g. Mi Video, Mi Music, GetApps) can be removed or disabled if you don’t use them and prefer third-party counterparts, which will free up a little space and reduce the load on the system.
⚠️ Note: When removing system components, make sure they are not critical to Android.Removing Google Play services or system framework will cause the phone to fail.
Expanding memory with a MicroSD card
The Xiaomi Redmi Note 7 features a hybrid slot that allows you to install a microSD card. It's a physical way to solve the problem of space shortage. The card can be used as a portable storage for photos, videos and music.
Newer versions of MIUI now allow the memory card to be formatted as part of an internal storage device (Adoptable Storage), in which case the system will perceive the flash drive as an extension of the internal memory and will be able to install applications on it, but the speed may be lower than that of the native drive.
To install the card, turn off the phone, remove the SIM card tray with a paper clip, install the memory card in the appropriate slot and insert the tray back. Once turned on, the system will suggest formatting the drive. Remember that formatting will completely destroy all data on the card, so copy important files in advance.
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Using a UHS-I or higher memory card is critical to making your smartphone work better, especially if you plan to record apps or shoot videos on it.
After setting up, remember to select the settings of the camera and voice recorder to save new files to the memory card, which will prevent the internal memory from filling up quickly in the future.