How to clear the memory on the phone Xiaomi Redmi 9 Pro

Xiaomi Redmi 9 Pro is a device that initially offered a great balance between performance and cost, but over time, even 128 GB of internal storage can become crowded. When the system memory is filled, the MIUI operating system begins to work unstable: apps open longer, the interface slows down, and new photos in the camera may simply not save. Owners often face an intrusive “Memory is full” notification that blocks normal use of the gadget.

The problem isn’t always a huge number of personal files, such as photos or videos. Often, the space will quietly eat away at the cache of applications, remnants of remote programs, system logs and duplicate files in the MIUI/Gallery folder. Proper cleaning requires a comprehensive approach, not just removing a couple of heavy games. In this article, we’ll discuss effective ways to free up space that will help return your Redmi 9 Pro to factory friction.

Storage analysis and search for hidden place sinks

Before you start mindlessly deleting files, you need to understand what exactly takes up precious gigabytes. Standard MIUI shell tools provide quite detailed statistics, but many users ignore them, relying on third-party cleaners. First, you should go to the Settings → Memory menu, where the system visualizes the distribution of data, showing the share occupied by applications, images, videos and system files.

Special attention should be paid to the “Other” section, which often hides data from messengers, offline maps of navigators and cache of streaming services. For example, Telegram or WhatsApp can grow imperceptibly to 10-15 GB if they automatically load all received media files.

And don't forget the download folder. Browsers by default save all downloaded files, and a lot of installations can accumulate in a year of use. APK-files that are no longer needed or viewed PDF-Cleaning Download's directory is the fastest way to get a few hundred megabytes of free space instantly.

Use of the built-in "Security" application

Every Xiaomi smartphone has a system tool called Security preinstalled, and it's not just an antivirus, it's a powerful processor that runs a system maintenance service that includes Cleanup, and it lets you scan your device for temporary files, residual debris, and damaged packages, and it's aggressive enough to make it work at a speed that's good for vacating space.

When you first run a scan, the system will suggest removing what's called "garbage," which includes image sketches, error logs, and temporary update files. However, it's important to be careful: sometimes useful data falls into this category, such as drafts in a gallery or a map cache that you'll have to download again, and it's recommended that you carefully review the file list before confirming the cleanup.

Special attention should be paid to the Deep Clean feature, which is often available in the app’s extended menu, which analyzes large files, rarely used apps and duplicates. Removing duplicate photos can free up to 20% of the gallery space if you often take series of images. This tool is especially useful for models with a fixed amount of memory, such as the 64 GB versions of the Redmi 9 Pro.

⚠️ Note: The Memory Acceleration feature in the Security app forcibly closes the background processes.This may cause the application state to reset (for example, an open article in the browser will close), but does not delete your personal data.

Cleaning up cache and social media data

The most voracious consumers of memory on any Android smartphone are social networks and instant messengers. VK, Instagram, TikTok, Telegram and WhatsApp store every image and video viewed in an internal cache so that when you reopen them, you can download them instantly. Over time, this cache can reach giant sizes comparable to the volume of the installed operating system.

To clean up, you need to follow the Settings → Apps → All apps. Find the app you want (like YouTube) and select Memory. Here you will see two buttons: Clear cache and Clear everything. The first one deletes temporary files, the second one resets the app to the state immediately after installation, removing logins and settings.

• 📱 Telegram: Better to clean through the built-in settings of the application itself (Data and memory) → Memory usage) as system cleanup may not reach deeply secretive media files.
• 📸 Instagram: Cash grows very fast due to watching Stories and Reels. Regular cleaning through Android settings is a must.
• 💬 WhatsApp: In the application settings there is a section “Store data”, where you can delete all transferred files at once or selectively via chats.

It's important to understand the difference between cache and app data. If you clean up the data, you'll have to re-enter the password and adjust the notifications, and the cache can be deleted without fear, because the app will simply upload the necessary images again the next time you use it, spending a little bit of traffic, but saving your settings.

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In Telegram settings, enable Autodelete Media Files by setting a cache shelf life for example 3 days, which will prevent the proliferation of garbage in the future.

Work with Gallery and Cloud Services

Photos and videos are the main content that the user generates. Redmi 9 Pro camera is capable of taking high-resolution pictures that take up a considerable volume. One minute video in 4K can weigh more than 300 MB. Regularly transferring the archive to a computer or to cloud storage is the only right solution for storing the phone's memory.

Google Photos offers a “Free Space” feature that automatically removes images and videos that have already been successfully uploaded to the cloud, allowing you to store an unlimited number of photos (in compressed quality) and access them from any device without taking up your phone’s local memory.

Also worth checking is the Recycle Bin folder in the gallery: deleted files don't disappear immediately, but are stored there for 30 days, continuing to occupy space; cleaning the Recycle Bin is the final step in freeing up space after sorting photos; and remember to also check the Screenshots folder, where visual debris often accumulates.

Application management and removal of unused software

The average user uses only about 20 percent of the installed applications, and the other 80 percent are games that have been played once, or programs for specific tasks that are no longer relevant, and each application takes up space for the installation file, but also creates data structures that can grow.

MIUI has a handy feature called Mode lite, or simply a manual view of the app list sorted by size. Removing heavy games like Genshin Impact or PUBG can instantly free up 10-15GB. If you don't plan to play soon, it's better to uninstall the game and download it again if necessary than storing gigabytes of resources on your phone.

You should also pay attention to the updated versions of the applications. Sometimes the new version of the program weighs much more than the previous one. If you notice that after the update, a standard application (for example, Music or Themes) has become suspiciously large, try to clear its data or, in extreme cases, remove the updates through the menu in the upper right corner of the app information screen.

Using a microSD memory card and transferring files

Redmi 9 Pro is equipped with a hybrid slot that allows you to use the second SIM-A microSD card or memory card, which is a lifeline for users who don't want to keep their phones clean, and if you set up the memory card correctly, you can transfer most of the user's data to it, leaving the internal memory free to run the system.

Once you have the card installed in the Settings → Memory menu, you can use it as an “Adoptable Storage” or “Portable Storage” option, but MIUI will offer you to transfer photos, videos and some applications to an external medium, which is critical for the stable operation of the smartphone.

• 📂 Camera: In the Camera app settings, change the save path to SD-All the new photos and videos will be written there.
• 🎵 Music and Books: In player and reader settings, specify the folder on the memory card as the main library.
• 📥 Downloads: In browsers (Chrome, Mi Browser) in the download settings, select saving files to an external drive.

Note that memory cards are slower than the phone’s built-in flash memory. It is not recommended to transfer the applications themselves, especially heavy games, as this can lead to increased loading time and slowdown. The memory card is ideal for storing static content: photo archives, movies, music and documents.

⚠️ Warning: Before removing the memory card, be sure to follow the command "Disable" or "Safe Retrieval" in the memory settings menu. Direct extraction of the working card can lead to file system damage and data loss.

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Using a memory card does not speed up the phone, but it prevents the internal memory from filling critically, which keeps the system running fast.

Frequently Asked Questions (FAQ)