Modern Xiaomi smartphones, running on the shells of MIUI or the new HyperOS, are complex computing systems, where every megabyte of RAM plays a critical role in the response speed of the interface. Users often face a situation when the device starts to work slower, applications fly out or load for a long time, and the first suspicious becomes overflow RAM (Random Access Memory). Understanding what processes consume resources, allows not only to speed up the gadget, but also to extend its battery life, as active background services constantly wake up the processor.
Unlike desktop operating systems, where resource monitoring is built deep into the taskbar, in Android mobile ecosystems, access to detailed statistics is often hidden from the average user, designed to protect the system from random changes that can lead to instability. However, Xiaomi engineers have left several loopholes and standard tools to provide comprehensive information about where all free memory goes.
In this article, we’ll look at all the diagnostic tools available, from simple built-in widgets to advanced engineering menus available through special codes, and learn to distinguish between system processes and voracious applications, and understand when to clean memory and when to intervene will only harm.
Use of the built-in Security application
The most obvious and affordable way to do initial diagnostics is to use a pre-installed system application called Security, which is the central node for managing resources in MIUI and HyperOS shells, combining the functions of antivirus, cleaner and task manager. When you run the utility, the system automatically scans the state of RAM and offers (one-tap) cleaning, but you need to dig deeper for deep analysis.
To get detailed information, you need to go to Clean up or click on the memory indicator in the main application window. This shows the total amount of memory installed and the amount currently available. Clicking on the corresponding icon or swipe on the memory widget will open a list of processes that occupy the most space right now.
The system ranks applications by the amount of consumed RAM, allowing you to quickly identify "eaters" of resources, but it is worth remembering that the data here is updated in real time and may not be entirely accurate for background services that the system artificially limits.
☑️ Diagnostics through the Security App
Importantly, the built-in cleaner often aggressively unloads applications from memory, which paradoxically can reduce performance. Android is designed to keep frequently used applications in RAM for quick start-up. Constant forced cleaning forces the processor to reload data from the drive, which is energy-intensive.
⚠️ Warning: Don't blindly rely on the percentage of memory "occupancy." RAM — This is normal for Android. The only thing that you should be concerned about is if you have lags and you're unloading the right apps spontaneously.
For more point-based control in the Safety menu → You can find a specific software and see how much memory it reserves, and this is especially useful for finding applications with memory leaks that are not visible in the general list.
Developer menu and process statistics
If standard tools aren't enough, the Developer Mode comes to the rescue, and it's a hidden partition that gives you access to low-level settings and detailed statistics, and to activate it, you need to go to Settings → About phone and quickly click on the build number (MIUI Version or HyperOS Version) 7 times.
After activation, a new option will appear in the settings menu, Additional or immediately Advanced Settings, where you need to select For Developers. We are interested in the section Running services. This displays a list of all active services and applications with the exact amount of RAM they occupy in real time.
Unlike a simple task list, you see the Foreground vs. Background divide, which gives you an idea of what keeps your memory busy, even if you can't see the application running. Often, you find that the lion's share of your resources goes to Google's system services or shell components.
You can find the background limit function in the same menu, and you should experiment with it carefully, and setting a rigid limit (e.g., "No more than 2 processes") can cause the music player to turn off when you switch to the browser and the navigator to reset the route.
What is ZRAM and how does it affect statistics?
Also available on the developer menu is the option to Show Memory Operations, which will be displayed in the corner of the screen every time an application goes active or unloads, and is a great way to track what action is causing the resource surge.
Hidden Codes and CIT Engineering Menu
For those who prefer quick solutions and access to “iron” tests, there are special options for the use of electronic devices. USSD-Entering the combination ##6484## or #4636## in the phone app opens the engineering menu or test menu.
You can often find Usage statistics or Memory info on the 4636 (Testing) menu, and it's dry, technical, but it's the most reliable, because it's taken directly from the core of the system. There's no beautiful graphs, just numbers showing the total volume, free volume and volume occupied by the system.
The CIT engineering menu (#6484##) is primarily designed to check components before selling or repairing, but in some firmware versions, you can find the Version or Hardware info section, which indicates the type of memory you have installed (such as LPDDR4X or LPDDR5) and its frequency, which indirectly affects your speed.
Note that on newer versions of HyperOS, access to some codes may be restricted or redirected to standard settings menus for security reasons. If the code doesn't work, try typing it through the Phone app in dial mode rather than through the contact search bar.
Using these codes is safe for the user’s data, but changing the settings in the engineering menu (if there are any) without understanding their purpose can lead to unstable operation of the radio module or display.
Third-party monitoring applications
When built-in tools are scarce, specialized tools from the Google Play Store, led by DevCheck Device & System Info, CPU-Z, and AIDA64, are available to read system logs and provide information that is hidden from the standard interface.
DevCheck is particularly valuable for its Memory tab, which shows not only current usage, but also a detailed breakdown by process type: native, system, user, and you can see the graph of RAM usage over the last minutes or hours, which helps identify memory leak applications where consumption is growing and not being reset.
Other utilities, such as the 3C All-in-One Toolbox, offer profile creation features. You can set up a "Games" profile that will automatically clear memory before running a heavy application, or a "Work" profile that will, on the contrary, prevent the cleaning of messengers.
| Annex | Substantive function | Accuracy of data | Advertising |
|---|---|---|---|
| DevCheck | Real-time monitoring | Tall. | Available (in the free version) |
| CPU-Z | Iron information | Medium | No. |
| AIDA64 | Complete diagnosis | Tall. | No. |
| SD Maid | Cleaning and analysis | Medium | There is. |
Installing a too-heavy monitoring app on a 4GB RAM device can exacerbate the problem you're trying to solve.
⚠️ Warning: Avoid client apps with aggressive advertising and questionable "Internet speed" features, often being miners or data collectors themselves, putting more stress on the system.
For professional analysis, you can use a PC connection and an ADB (Android Debug Bridge) utility. The adb shell dumpsys meminfo team gives you a detailed report on each process that you can analyze on a computer, which is a method for advanced users.
Analysis of consumption by application type
Understanding which categories of apps are most memory-stressing helps optimize the use case.Social networks like Telegram, VK and Instagram are notorious for their appetite.They cache vast amounts of media files and hold active connections for instant notifications.
Browsers with multiple open tabs are another source of problems. Each tab in modern engines (Chromium, WebKit) is a separate process. If you have 20 tabs open, the memory will be almost full. Caching pages speeds up the return to them, but it is expensive.
Heavy projects like Genshin Impact or PUBG Mobile can reserve up to 2-3 GB of RAM for themselves. After leaving the game, memory is not always released immediately, since the system stores the state of the game for quick return (suspend function).
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Use lightweight versions of apps (Lite) if you have less than 6 GB of RAM, which consume significantly less resources and run more stable on older devices.
Google Play Services can also consume significant resources, especially if sync is not working properly or accounts are too many, in which case cleaning service data or reinstalling updates helps.
Desktop widgets deserve special attention: Live wallpaper, weather widgets, news feeds — all of them require constant updating and keep their processes in mind. Removing excess decorations can free up hundreds of megabytes.
Optimization and expansion of memory (Memory Extension)
In modern Xiaomi models, Memory Extension has been introduced, which allows you to reserve some of your internal flash memory (UFS) for RAM, which is technically the equivalent of a swap file in Windows. You can find this option in Settings → Additional → Expansion of memory.
Enabling this feature increases the total amount of available RAM displayed on the system. For example, an 8GB phone can become "11GB" or "13GB." This helps keep more applications in the background, but don't expect a performance miracle. Flash memory still works slower than real LPDDR5 RAM.
For users who are critical to the maximum response speed in games, sometimes it makes sense to even turn off the memory expansion so that the system does not try to use a slower portion of storage, it is a matter of individual tests on a particular model.
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Memory expansion is a trade-off between the number of open applications and the speed of their operation. For multitasking — let's turn it on, for maximum performance in games — we test with the function turned off.
In addition to hardware expansion, software optimization is important. Regularly restarting your smartphone (at least once a week) helps to reset accumulated errors and free fragmented memory, and it is also worth watching for updates to applications, as developers often fix memory leaks in new versions.
In conclusion, monitoring RAM on Xiaomi is a balance between control and trust in the system. You don’t have to aim for zero consumption, but keeping abreast of the underlying processes is good for the long life of the device.