Xiaomi smartphone owners often face a lack of resources when running heavy games or running multiple applications simultaneously. RAM is a critical component in determining interface response speed and device multitasking. When free space in RAM runs out, the system begins to forcefully close the background processes, leading to tab reboots and slowdowns.
There is a common misconception that increasing the physical volume of a memory chip is impossible without soldering new chips. However, modern shells MIUI and HyperOS offer software tools to virtualize available resources.
In this article, we will look at legal and safe ways to increase the available RAM, and also discuss why some of the “wonder apps” from the Play Market can only harm your device.
Virtual memory and RAM extension technology
Starting with certain versions of the MIUI 12.5 shell and later, Xiaomi has implemented a virtual memory extension feature that allows the system to use a portion of the embedded storage (ROM) as an additional buffer for temporary data, technically by creating a paging file similar to that used in desktop operating systems.
Activation of this feature does not require obtaining superuser rights (Root) and is performed by regular means. However, it is worth noting that the speed of reading and writing the embedded drive is lower than that of physical RAM, so the performance gains will be noticeable primarily when holding a large number of applications in the background, not in synthetic speed tests.
⚠️ Attention: Constant activation of virtual memory can accelerate the wear of the built-in drive due to intense cyclic data writing.
To enable the technology, you need to go to the settings menu and find the section responsible for advanced system settings. The path may vary slightly depending on the device model, but the logic remains the same for all modern smartphones of the brand.
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If you use your phone in call-only mode or as a navigator in a car, it is better to turn off the memory extension to extend the life of the drive.
Instructions for activating memory expansion in MIUI and HyperOS
The process of turning on the virtual buffer is as simple as possible for developers, and it takes only a few minutes. You don't need computers, cables or complex debugging tools. All the actions are done directly through the smartphone screen.
First, open the main settings menu and scroll down to "Extended Settings." In some firmware versions, this section may simply be called "Advanced." This is where key resource management options for the device are hidden.
☑️ Activation of memory expansion
Find Memory Extension, which will automatically check the available storage space and suggest you select the amount of virtual RAM you add. The options available usually range from 2 to 4 GB, depending on the free storage capacity of your storage.
Once you select the desired volume, you will receive a warning to reboot, which is a prerequisite, since the kernel of the system must redistribute the address space at start, and after switching on, the smartphone will work with a new memory profile.
| Xiaomi model | Max. Expansion. | Required version of MIUI | Impact on the battery |
|---|---|---|---|
| Redmi Note 10 | +2GB | MIUI 12.5+ | Minimum |
| Xiaomi 11T | +3GB | MIUI 13+ | Average. |
| Poco X3 Pro | +3GB | MIUI 12.5+ | Notable. |
| Redmi Note 12 | +4GB | HyperOS / MIUI 14 | Average. |
Cleaning and optimizing busy memory
Even without installing additional gigabytes, cleaning up existing space properly can do wonders. App cache and residual files take up valuable resources that could be used to buffer active tasks. Regular file system hygiene is key to stable operation.
Xiaomi's built-in Security app has a pretty aggressive cleaning algorithm. Run it and press the Clean button. The system will analyze the device and suggest that you delete temporary files. Don't be afraid to delete the cache -- it's not your personal photos or documents, but only temporary data that the apps will create again if necessary.
Special attention should be paid to the section "App management." Many programs have an auto-run function that makes them hang in your memory all the time, even if you don't use them, and turning off auto-runs for social networks and stores is an effective way to free up RAM.
Hidden Memory Eaters
You can also check the Memory section in the settings, and you can see detailed statistics on which apps are using the most resources, and if you see a program that you haven't used in a month, but it takes hundreds of megabytes in the background, you'd better delete it or limit background activity.
Using Developer Mode to Manage Processes
For advanced users, there's a hidden "Developers" menu that allows you to manually set a limit on background processes, which is a radical but effective method if the phone is slow due to overflowing RAM.
To activate this menu, you need to go to About Phone and quickly click on the build number (MIUI version) seven times. Once the "You've become a developer" notification appears, a new section will appear in the advanced settings.
You can set a limit here, like "No more than 2 processes," which will force the system to tightly close anything that goes beyond two active applications, which is useful for older models, but can be uncomfortable for those who are used to active multitasking.
⚠️ Attention: Changing the limits of background processes can lead to incorrect work of messengers (messages may come with a delay) and music players.
In the same menu, there is the option "Do Not Activity": If you turn it on, the system will destroy the application as soon as the user switches to another window, this is guaranteed to free up all available RAM, but turns the smartphone into a device where each application is launched from scratch (from the screensaver).
Third-party applications and their real effectiveness
There are thousands of apps in the Google Play store with names like “RAM Booster”, “Memory Cleaner”, etc. Most of them work on one principle: they forcibly close the background processes, freeing up memory for a short time.
The problem is that the Android operating system itself is very good at managing memory. When RAM runs out, the system automatically shuts down the least important processes. Third-party accelerators just do the same thing, but often consume more resources than they free up, due to their own advertising and background activity.
Moreover, some of these programs require suspicious permissions and can collect user data. Using Xiaomi’s built-in optimization tools is always safer and more effective than installing dubious software.
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The best memory booster is the absence of heavy, unused apps and the regular reboot of your smartphone.
The only exception is monitoring apps that show real resource consumption in real time, helping to identify a voracious application, but using them for constant cleaning doesn't make sense.
Cardinal measures: Resetting and flashing
If the software methods don't work and the smartphone continues to slow down, there may be some critical errors or fragmentation in the system, and a complete factory reset helps in these cases.
Before you do this, make sure to back up all your important data to the cloud or your computer, and reset will remove all apps, photos, contacts and settings, returning your phone to the "out of the box" state, guaranteed to free all RAM from program debris.
To do the reset, go to About Phone → Settings Reset → Erase All Data. Once you reboot, you get a clean system. In the first hours after the reset, the phone may run slowly until the background indexing processes are complete, but then the performance should increase.
⚠️ Warning: Make sure the battery is at least 50% battery power before starting the reset. interruption of the process may cause software to break (brick).
For power users, there is also the option of installing custom firmware (like LineageOS or Pixel Experience), which is often lighter and more optimized than stock MIUI. However, this requires unlocking the bootloader, which can be difficult for beginners and voids the warranty.