Xiaomi and Redmi smartphone owners often experience a sudden system message that reports a critically low amount of free memory, a problem known as a Low Memory error that can occur even on large-drive devices if the system partition is full of temporary files or cache. Ignoring this warning often leads to serious consequences, such as the inability to install updates or malfunctioning installed applications.
Understanding the nature of this notification is the first step to successfully solving the problem: MIUI and HyperOS require a certain reserved space to correctly perform background processes and temporarily store data. When this limit is exhausted, the system blocks new write operations, which causes an annoying pop-up.
Further ignoring the situation can lead to the fact that the smartphone will start to work noticeably slower or completely stop responding to commands, in this article we will discuss in detail all possible ways to eliminate this error, from simple cleaning methods to more complex manipulation of system settings.
The reason for the Low Memory error on Xiaomi devices
The main cause of the error is overflow of the System Data partition or the user partition allocated for applications. Android, on which the MIUI shell is based, uses the free space as a buffer zone for exchanging data between running programs. If the free space runs out, the operating system cannot create the necessary temporary files, which causes the failure.
Often, messengers like Telegram or WhatsApp are the culprits, which accumulate gigabytes of cached images and videos, and malfunctioning system services or “heavy” updates that take up space until the time of full installation can also cause the problem.
It is important to distinguish between a lack of RAM (RAM) and internal memory (ROM). Notification "not enough memory" on Xiaomi almost always refers to permanent storage, not RAM, although visually these concepts are sometimes confused.
⚠️ Warning: Continuously ignoring space shortage warnings can damage your contact database or system settings, as the system will not have the resources to save them.
Storage occupancy analysis is a key stage in the diagnostic process, and users need to understand which data type occupies the lion’s share of the space before embarking on radical cleanup measures.
Use of the built-in cleaning tool
The easiest and safest way to solve the problem is to use the regular Security app, which is preinstalled on all Xiaomi smartphones.This tool is designed specifically for working with the MIUI file system and is able to find hidden temporary files that are not visible to the user when you normally browse folders.
To start the procedure, you must open the Security application and select Cleanup. The system will scan and suggest removing debris, app cache and unnecessary APK installation packages. It is recommended to also click on the Clean All button after a detailed analysis to make sure that all possible temporary files have been deleted.
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Use the Deep Clean feature in the Security app to find large files you may have forgotten in your download folder or voice recorder.
After a standard cleaning, you should pay attention to the “Big Files” section, often there are forgotten videos or archives, deleting which instantly frees up several gigabytes. If the built-in tool did not help free up enough space, you should move to manually cleaning the application cache.
The effectiveness of the built-in utility depends on the regularity of its use. If you clean it once a week, the probability of a system notification of a memory shortage decreases to almost zero, but if you have already encountered a problem, a quick cleaning may not be enough.
Manual cleaning of cache and application data
If automatic tools fail, you need to manually check the most voracious applications. Social networks and instant messengers often store data in their cache, the volume of which can exceed 5-10 GB. To manage this data, go to the Settings menu, then select Apps and click All applications.
In the list that opens, you need to sort programs by memory size. If you select the largest application (like TikTok or Instagram), go to its properties and select Memory. There are two buttons available here: Clear cache and Clear all data. The first deletes temporary files without losing accounts, the second returns the application to state immediately after installation.
☑️ Manual cleaning algorithm
Special attention should be paid to the Gallery system application. In newer versions of MIUI, deleted photos can be stored in the basket for a while, continuing to take up space. Cleaning the gallery basket often frees up a significant amount of space that the system still considers occupied.
Manual cleaning requires caution. When you delete all the data from an application, you lose your correspondence history and login to the services, so make sure that important information is stored in the cloud or exported before you do this.
Application portability and work with SD-card
For devices that support microSD cards, the issue of data portability is relevant. Although modern versions of Android limit the ability to install applications on an external card, the use of the device is not a problem. SD-Media storage cards remain an effective way to unload internal memory.
To transfer files, connect your smartphone to your computer or use a file manager. Move the DCIM (camera photos and videos), Download and Music folders to an external map. After transferring, you need to specify a new path for applications (such as a camera or voice recorder) to save data in their settings.
Some users try to use the memory extension feature when part of the card becomes part of internal memory. However, on Xiaomi smartphones, this feature is often hidden or unstable. A more reliable option is to configure the card as a portable medium and manually move heavy files.
⚠️ Attention: The speed of the memory card is lower than the speed of the internal drive. SD-map system applications or games, as this can lead to slow loading and errors.
If internal memory is critically low, consider buying a high-speed card (Class 10, U3), which minimizes delays when working with files stored on external media and ensures stable multimedia applications.
Cleaning System Garbage Through ADB (For Advanced)
For power users who are not afraid to work with the debugging interface, the ADB (Android Debug Bridge) cleaning method is available, which allows you to delete files that are hidden from the average user and not deleted by standard cleaning tools.
First, activate the developer mode. To do this, go to Settings → About Phone and seven times click on the MIUI build number. Then, in the Additional Settings menu, turn on USB Debugging. Connect your smartphone to your PC and start the command line.
adb shell pm trim-caches 999999999This command forcibly trims the cache of all applications to the lowest possible value specified in bytes. In this example, we specify a huge limit, which actually forces the system to clear all available cache. This action is safe for personal data, but requires confirmation on the smartphone screen.
What to do if your computer can’t see your phone?
Using ADB gives you a powerful file system control tool, but it requires care. Mistyling commands can lead to the removal of important system components. Always double-check the command syntax before pressing the Enter key.
This method is especially effective when the “insufficient memory” error appears immediately after a major system update, when old update files are still taking up space but are no longer needed.
Comparison of Memory Cleaning Methods
The choice of cleaning method depends on your technical background and the severity of the problem. Below is a table to help determine the best solution for your situation. Each method has its advantages and limitations that must be considered.
| Method | Efficiency | Risk of data loss | Difficulty |
|---|---|---|---|
| Security annex | Medium | No. | Low. |
| Manual cache cleaning | Tall. | Minimum | Medium |
| Transfer to SD-map | Tall (for photo) | No. | Low. |
| ADB teams | Maximum | Medium. | Tall. |
| Reset to factory settings | Complete. | High (all removed) | Medium |
As you can see from the table, for most users, the best solution is a combination of built-in cleaning and manual cache management of heavy applications, and ADB is only justified in difficult cases where standard methods are powerless.
Do not immediately resort to a complete reset of the device, if you can solve the problem by software methods. Saving user data and settings is always a priority when servicing a smartphone.
Prevention of memory overflow
To prevent the problem of “lack of memory” from returning, you need to introduce a habit of regular maintenance of the device, it is recommended to check the storage once a month and delete unnecessary files, Automation of this process is possible with the help of built-in schedulers in the Security application.
Turn off autoloading media files in instant messengers. Telegram, Viber and WhatsApp settings can prevent automatic saving of photos and videos to the gallery, which will prevent duplicate files and save precious gigabytes of internal memory.
It is also useful to use cloud storage, such as Google Photos or Yandex.Disk, with automatic sync and deletion of local copies, which allows you to store the archive of photos in the cloud, leaving only thumbnails or recent pictures on the device.
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Regularly cleaning the messenger cache and disabling autoload media are the most effective measures to prevent memory shortage on Xiaomi.
Compliance with these simple rules will allow your Xiaomi smartphone to work quickly and stably throughout its life, and the system will have the necessary space for temporary operations, which will eliminate the occurrence of critical errors.