Xiaomi smartphones based on MIUI or HyperOS often face problems of memory shortage β whether RAM or embedded ROM. Causes range from background application activity to system errors, but the first step to solving always becomes a diagnosis of the current state. In this article, we will discuss not only how to look at busy and free memory, but also how to interpret the data: what is considered the norm for your model, what processes eat up resources for no reason, and when it is time to sound the alarm.
It's important to understand that Xiaomi is actively optimizing memory in new firmware versions. For example, in HyperOS, the RAM control algorithms are radically different from MIUI 12, so there are no universal "normal" values. We'll look at ways to verify all current versions of the software, including hidden tools for power users. And if you notice that the phone started to "brake" after the update, at the end of this article there is a checklist to fix typical problems.
1. Memory check through standard Xiaomi settings
The easiest way to do this is to use the built-in MIUI/HyperOS tools, which provide basic information about memory status, but often miss details that are critical to diagnosis.
Open the Settings menu β About the phone β Memory. Here you will see:
- π± Total ROM (built-in memory) and occupied space.
- π RAM: how much is currently used and how much is free.
- π Category distribution diagram (system files, applications, media, etc.).
- β οΈ Warnings about memory shortage (if occupied) >90%).
Note the Cleanup section in the same menu, which shows how much trash can be removed (cache, temporary files). However, in HyperOS, Deep Cleanup can delete data from some applications without warning, so use it carefully.
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If you see a large βOtherβ line in the βMemoryβ section (e.g., 10+GB), it often means fragmented files or remnants of deleted applications. These can be cleaned through Settings β Storage β Free up space
| Indicator. | Norm for 4/128 GB | Norm for 8/256 GB | Cause of deviations |
|---|---|---|---|
| Occupied ROM | 50β70% | 30β50% | Many media files, app cache, duplicate photos |
| Free RAM | 0.5β1.5 GB | 1β2.5 GB | Background processes, viruses, MIUI errors |
| βSystem filesβ in ROM | 12β18 GB | 15-25 GB | Software updates, error logs, preinstalled applications |
β οΈ Note: If you see in the Memory section that System Files are occupied by >20GB on a 128GB ROM device, which could indicate a broken firmware, and then only flashing through Fastboot will help.
2. Detailed analysis of RAM through the "Task Manager"
Standard RAM monitoring in settings only shows the total numbers, but does not reveal which processes consume memory. For this purpose, MIUI and HyperOS have a hidden tool called Task Manager (similar to Device Manager in Windows).
How to open it:
- Activate Developer Mode: Go to Settings β About Phone and click on MIUI Version 7 times.
- Return to Settings β Additional β For developers and enable the USB Debugging option (not necessarily connect the cable).
- Now in Settings β Applications β Task Manager will appear advanced statistics.
In the dispatcher, you'll see:
- π Timeline of using RAM in real time.
- π List of all active processes with memory consumption (sorting by descending).
- β‘ "Frozen apps are those that are not closed, but are not active (they can be forcibly stopped).
Stop unnecessary processes in Task Manager |
Disable AutoRun for Applications in Settings β Permissions β AutoRun |
Check your phone for viruses (for example, through Malwarebytes)|
Reset the settings to factory (if the problem is not fixed)-->
If you see an app using >500MB of RAM in the background (like Facebook or TikTok), that's normal for modern social media, but if it's a Gallery or a Camera that's causing it, that's a sign of a failure.
3. Third-party applications for deep diagnostics
Xiaomiβs built-in tools provide limited information, and for advanced memory analysis, we recommend:
- π οΈ DevCheck β shows detailed information about RAM (type, frequency, kernel loading) and ROM (sectional breakdown, including: /system and /data).
- π CPU Monitor - tracks the use of RAM in conjunction with the processor (useful for identifying "gluttonous" games).
- π Files by Google β scans ROM for garbage, duplicates and large files that can be deleted.
- π‘οΈ SD Maid β clears cache, remnants of deleted applications and temporary files (requires root for full functionality).
An example of analysis through DevCheck:
- Install the app from Google Play.
- Open the Memory tab.
- Note the lines: Total RAM is full RAM. Used RAM is currently occupied. Cached RAM is the memory used for caching (it's not critical!), Free RAM is completely free memory.
If Cached RAM is >50% of the total, thatβs fine β Android is optimized to caching frequently used data, but if Free RAM is constantly close to zero, and the phone is slowing down, itβs a sign of memory leak.
4. Memory check via ADB (for power users)
The Android Debug Bridge (ADB) tool allows you to get memory data that is not available through a GUI, a method that is suitable if you suspect system failures or want to check memory at the kernel level.
What you'll need:
- π₯οΈ Computer with installed ADB Tools.
- π± Xiaomi smartphone with enabled debugging USB (Settings β For developers β Debugging by USB).
- π Cable USB (preferably original).
Memory analysis commands:
adb shell dumpsys meminfoThis command will output a full report on how all the processes use RAM, to save it to a file on a PC:
adb shell dumpsys meminfo > mem_report.txtTo check the ROM, use:
adb shell df -hThis command will show free and occupied space across all sections (e.g. /data, /system).
How do you read the meminfo report?
β οΈ Note: If the report is df -h You can see that the section /data filled 100%, And the phone settings show a lot of free space, which indicates a partition mounting error.
5.Memory state analysis through Recovery mode
If the phone is slowing down or not turning on, you can check the memory through the Recovery Mode, which does not require booting the system and is useful in critical crashes.
How to log in to Recovery:
- Turn off the phone.
- Press the button Power + Volume up for 10-15 seconds.
- In the recovery menu, select the language (if there is one).
- Go to Advanced β File Manager (some versions of MIUI Recovery may not have this option).
In File Manager you can:
- π View the contents of the section /data (where user files are stored).
- ποΈ Delete unnecessary files (e.g. large logs in the /data/log).
- π Check the free space on system partitions.
If you see in Recovery that the /data partition is full but you canβt clear it, reset via Wipe Data.
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If the phone is not booting due to memory shortages and Recovery doesnβt have a File Manager, use the adb shell command to remove unnecessary files directly from recovery. -rf /data/log/*
6.Typical memory errors on Xiaomi and their solutions
Even on new Xiaomi smartphones, users are facing memory problems, and letβs look at the most common cases and how to fix them.
| Problem. | Possible cause | Decision |
|---|---|---|
| RAM is always packed to the top. | Background processes, viruses, MIUI errors | Disable auto-run applications, scan for viruses, reset settings |
| "Memory is full" but there are few files | System garbage, cache, corrupted files | Clean through Settings β Storage β Free up space or SD Maid |
| Apps are being dropped due to memory shortage | Memory leak (memory leak) in the firmware | Update or roll back to a stable version of MIUI |
| ROM is quickly filled after resetting | Automatic Data Recovery from the Cloud | Disable sync in Settings β Google Accounts β Sync |
Special attention should be paid to the error "Not enough memory" when installing applications, even if the settings show a lot of free space. This is often associated with fragmentation of the /data partition.
- π Reboot your phone β sometimes it helps the system redistribute memory.
- ποΈ Remove a few large applications and install them again.
- π οΈ Perform reset through Settings β Resetting settings β Reset all settings (data will not be deleted, but application settings will reset).
If the problem persists, check the integrity of the file system through ADB:
adb shell e2fsck -f /dev/block/mmcblk0pX(where X is the partition number, usually p25 for /data).
7.Memory optimization: how to prevent problems
To avoid memory problems on Xiaomi, follow these guidelines:
- π΅ Limit background activity: in Settings β Battery β Select βBalancedβ or βCharge Savingβ mode β this will reduce the load on RAM.
- π« Turn off Autostart: Go to Settings β Permits β Autostart and disable it for unnecessary applications.
- ποΈ Use Cloud Storage: Move photos and videos to Google Photos or Mi Cloud to free up ROM.
- π Clean the cache regularly: in Settings β Warehouse β Cache data click "Clear".
- π± Update the firmware: in new versions MIUI/HyperOS Optimized work with memory.
For devices with 6GB of RAM or less, it is useful to turn off the animation interface, which will reduce the memory load.
- Activate Developer Mode (as described above).
- Go to Settings β Additional β For developers.
- Find options: Window animation scale β No animation. Size of transition animation β No animation. Duration of animation β Off..
If you use Xiaomi with a microSD, set up the default data save to the memory card:
- Go to Settings β Storage β SD card.
- Click on the three dots in the top right corner and select Storage Settings.
- Select SD Card as the default save location for photos, videos, and files.
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On HyperOS devices, RAM Extension (in Settings β Additional β Memory Extension) allows you to use part of the ROM as virtual RAM. This can help if you have 4-6 GB of physical memory, but donβt expect miracles β virtual RAM is slower.