Slow-motion interfaces, sudden app hangs, or the "Not enough memory" message on Xiaomi's screen is a familiar pattern? The reason is often overloaded RAM. Unlike persistent memory, where files are stored, RAM is responsible for real-time system speed. When it gets clogged with background processes, the smartphone starts to "brake" even if there is still free disk space.
Many users mistakenly think that resetting RAM is equivalent to completely restarting your phone or resetting to factory settings. In fact, these are two different processes: cleaning RAM does not affect your data (photos, messages, applications), but instantly frees up resources for new tasks. In this article, we will discuss 5 proven ways to free RAM on Xiaomi, Redmi and POCO, including hidden MIUI and HyperOS functions that are not written in the official instructions.
Xiaomiβs smartphones are characterized by aggressive memory optimization by the system, which extends the time it runs without recharging, and causes applications to reboot frequently when they return to them.
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1. Quick cleaning of RAM through the "Recent" menu
The easiest way to free up RAM is to use the built-in feature in the multitasking menu, which works on all Xiaomi models (from the Redmi Note 8 to the Xiaomi 14 Ultra) and does not require superuser rights.
To perform the discharge:
- Open the menu of recent apps (swipe up from the bottom edge of the screen and 1 second delay).
- Slip the "Close Everything" icon (usually located at the bottom of the center or right).
- Wait 2-3 seconds β the system will automatically clear the cache of applications in RAM.
Important: This method closes all active processes, including background services (such as music players or navigation), and if you listen to music through Spotify or use Google Maps, you will have to start them again after cleaning.
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On some models (for example, POCO F5) instead of the button "Close all" displays the icon of the cart - the functionality is the same.
Efficiency: Frees up to 30-40% of RAM, but it works temporarily. After 10-15 minutes of using the phone, the memory will again be filled with background processes.
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Forced reset via "Security settings"
MIUI and HyperOS have a hidden deep memory cleaner tool that not everyone notices, called Acceleration, which is in the security section, and it's more aggressive than shutting down applications manually, because it removes even system processes that aren't usually displayed in the multitasking menu.
Instructions:
- Go to Settings β Memory β Acceleration (the HyperOS path can be Settings β Additional β Optimization).
- Click "Clean" - the system will scan the memory and show how much RAM can be released.
- Confirm the action by tapping "Accelerate."
Once executed, you will see a notification like βX MB of memory freed.β On tests with the Xiaomi 13 Pro (12 GB of RAM), this method freed up to 1.2 GB of memory, which is comparable to rebooting the device.
Clears the app cache in RAM|Closes the background processes, including system processes|Resets the kernel cache (does not affect user data)|Optimize memory allocation for active tasks-->
Restriction: Some firmware (e.g. global MIUI 14 for Redmi Note 11) may not have Acceleration, in which case use alternative methods from the following sections.
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3.Use of the Engineering Menu (for Advanced)
If standard methods donβt work, you can use Xiaomiβs engineering menu, which has low-level memory settings, which requires caution: wrong actions can cause a system to crash.
How to open the engineering menu:
- Open the Phone app and enter the code: ##4636###
- In the menu that opens, select "Battery Information" (on some models - "Usage statistics").
- Scroll down to the "Memory" block - here the current state of RAM is displayed.
- Press "Clear Memory" (if the option is active).
In the engineering menu you can also see detailed statistics:
- π MemTotal β the total amount of RAM in the device.
- π MemFree β Free memory (must be at least) 10-15% total).
- ποΈ Cached β memory occupied by cache (it can be safely cleaned).
What to do if the Clear Memory button is inactive?
Warning: Do not change other options in the engineering menu unless you understand their purpose, for example, improper editing of the LMK (Low Memory Killer) settings can cause the phone to constantly reboot.
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4. RAM reset via ADB (for technical users)
If you're familiar with Android Debug Bridge (ADB), you can do deep memory cleanup with the command line, which is suitable for devices with unlocked bootloader or root rights, but some commands work on standard firmware.
Step-by-step:
- Install ADB Tools on your PC.
- Connect Xiaomi to your computer and allow debugging over USB (Settings β About Phone β MIUI Version, tap 7 times; then Settings β Additional β For Developers β Debugging over USB).
- Open the command line (Windows) or terminal (macOS/Linux) and type in: adb shell
- Run the command to reset the cache: echo 3 > /proc/sys/vm/drop_caches This command cleans pagecache, dentries and inodes without rebooting.
For the forced closure of all background processes, use:
am kill-allThe result: RAM is freed up by 20-50% depending on the current boot, which is especially useful if the phone has been running for a long time without rebooting and there are a lot of junk processes.
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5. Automatic cleaning with third-party applications
If you don't want to manually monitor your memory, you can install a tool for automatic optimization.
| Annex | Functions | Compatibility | Evaluation |
|---|---|---|---|
| Greenify | Hybernation of background applications, cleaning RAM on schedule | MIUI 12+, HyperOS, requires root for full functionality | βββββ |
| SD Maid | Cache cleaning, search for βjunkβ processes, database optimization | All Xiaomi models work without root | βββββ |
| MIUI Optimizer | Specialized tool for MIUI, cleaning RAM and cache in 1 click | MIUI 13/14 only, HyperOS not supported | βββββ |
Example of setting up Greenify:
- π§ After installation, grant the application special access rights (Settings) β Annexes β Special access β Optimizing the battery).
- π± Add to the hibernation list apps that shouldnβt work in the background (e.g. social media or instant messengers).
- β° Set up automatic cleaning on a schedule (e.g. every 2 hours).
β οΈ Note: Some memory cleanup applications (such as Clean Master) may consume significant RAM resources themselves. 4PDA or XDA-Developers.
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6.When RAM resets don't help: diagnosing problems
If the phone is still slowing down after cleaning the memory, the problem may be deeper:
- π οΈ Failure of the RAM module on older models (for example, Redmi) 4X) Memory can degrade over time.
- π€ Viruses or malware β some Trojans disguise themselves as system processes and consume resources.
- π Firmware failure - after a failed update MIUI It may mismanage memory.
How to check:
- Run the memory test through the CPU-Z application (Memory section). If the Total RAM value is less than the stated one (for example, 3 GB instead of 4 GB), this is a sign of hardware malfunction.
- Check your phone for viruses with Malwarebytes or the built-in MIUI Security scanner.
- Reset the settings to factory (Settings β About the phone β Reset settings), pre-saving the data.
β οΈ Note: If the problem remains after resetting, and CPU-Z You see a reduced amount of RAM, you go to the service center, and this could be a sign of a memory chip failure, a common malfunction after falls or overheating.
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If free memory (MemFree in the engineering menu) is consistently below 10% of total RAM, even after cleaning it is a sign of a system problem, not a normal overload.
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