Owners of the popular Xiaomi Redmi Note 8 smartphone over time begin to notice a decrease in the performance of the interface. This is a natural process, since the Android operating system in conjunction with the MIUI shell accumulates temporary files and background processes. The device’s RAM gradually fills up, which leads to slowing down applications and a long response of the system.
Effective RAM cleaning not only speeds up your device, but also extends its battery life. In this article, we’ll look at proven resource freeing methods that are safe for your Redmi Note 8 and don’t require superuser rights.
There are several levels of cleanup, from standard system tools to advanced customization for power users. On the Redmi Note 8 with 4GB of RAM, it is critical to regularly free up resources for the stable operation of heavy applications. Let's look at each method in detail.
Basic cleaning through the standard MIUI interface
The easiest and most affordable way to free up RAM is to use the built-in Security app, which is pre-installed on all Xiaomi devices and optimized specifically for the MIUI shell, and allows you to complete background processes that consume resources with a single touch.
To do this, you need to find a green shield icon on your desktop, and when you run the application, the system will automatically scan, you just need to press the large, circular Cleanup button in the center of the screen, and the system will force you to close unused applications.
⚠️ Warning: Do not abuse the memory cleanup function every 5 minutes. Aggressively shutting down processes causes the system to constantly restart services, which can increase battery consumption.
Additionally, the "Game Acceleration" feature is available in the same menu. If you activate it, Redmi Note 8 will prioritize the resources of the running game, temporarily limiting the background activity of other programs, which is especially useful for owners of the version with 4 GB RAM.
Manual control of running applications
Deeper control of RAM provides a multitasking menu, and unlike quick cleaning, here you see specific applications that you can selectively close, which is useful if you know that some program is eating up resources.
To get into this menu, swipe from the bottom up (or click the square button, depending on the type of navigation), you will see cards of all open applications. You will see a swipe up or down (in the MIUI settings, the direction may vary) you can close a particular program.
But there's a more radical method, which is to completely clean up all background tasks, and to do that, you have to click the "Clean" button on the multitasking menu (usually looks like a cross or a broom), and the system will close all applications except systemically important ones.
- 📱 Press and hold the "Menu" button (square) to instantly trigger a memory clear on some firmware versions.
- 🚫 Close heavy apps (navigators, games) immediately after use, as they may hang in the background.
- ⚙️ Check the Memory Extensions settings if they are available in your Android version, although on the Redmi Note 8 this works via virtual swap.
☑️ Checklist for quick cleaning
Cleaning the cache of applications and system debris
Accumulated cache is temporary files that speed up the startup of programs, but over time take up space in RAM and storage. In Xiaomi Redmi Note 8, cleaning the cache is often confused with cleaning the memory, but these are different processes. The cache is stored in internal storage, but active data from the cache can load the processor and RAM.
To clean, go to Settings → Applications → All apps. Here you should select the most resource-intensive programs (for example, YouTube, Telegram, Chrome). Inside the menu of each application, find the item "Memory" and click "Clear cache".
It's important not to confuse the Clear Cache button with the Clear Everything button (or Reset) button. The second button will delete your correspondence, logins and settings within the app. We only need the cache.
| Type of data | Where it takes place | Impact on RAM | Security of removal |
|---|---|---|---|
| Cash app. | Internal memory. | Average (when loading) | Safe. |
| Background processes | RAM | High. | Safe (reboot) |
| User data | Internal memory. | Low. | Dangerous (data loss) |
| System Logs | Internal memory. | Low. | Safe. |
⚠️ WARNING: When cleaning up your social media cache (WhatsApp, Viber), make sure you have a backup of important media files, although text history is usually saved.
Using Developer Mode to Optimize
For advanced users, Redmi Note 8 provides access to hidden settings through the “Developers” menu, where you can limit the number of background processes, which directly affects the amount of free RAM.
To activate this mode, you need to quickly click 7 times on the build number in the About Phone section. Once the message "You became a developer" appears, a new item will appear in the settings menu. Find the Applications or System section inside the developer menu.
Find the "Background Process Limit" option. The default is "Standard Limit." You can change it to "No More than 2 Processes" or "No More than 3 Processes" to make MIUI more aggressively unload old applications from RAM.
What is the zygote process?
It is worth noting that too tight a restriction can lead to the fact that notifications from messengers will arrive with a delay, the system will be forced to restart the application with each incoming message, which also consumes battery power.
Analysis of memory consumption in real time
To understand what is eating your RAM, you can use a built-in analyzer, and the developer menu has a Memory or Running Services item, which displays a list of processes and the amount of memory they take up in real time.
Often, it turns out that the main consumer is not games, but system services Google Play Services or heavy advertising in free applications, and once you identify the culprit, you can decide whether to remove or restrict him.
It is also useful to monitor the memory usage schedule: If the schedule remains high after all applications are closed (for example, 80% of 4 GB is occupied), this may indicate a software failure or a “memory leak” in one of the system modules of the MIUI.
- 📊 Keep an eye out for the "Available" option - normally on the Redmi Note 8, it should be about 1.5-2 GB free after downloading.
- 🔍 Look for apps marked “Service” – they often hang in the background unnoticed by the user.
- 🛑 If the system process consumes too much, try simply restarting your smartphone.
💡
Periodic full reboot (switch off and on) every 3-4 days is more effective than any cleaning, as it completely clears RAM of fragmented data.
Cardinal measures: Resetting and optimizing the system
If the software methods don't work and the Xiaomi Redmi Note 8 continues to slow down, there may be some critical bugs in the system, in which case, resetting to factory settings helps, which will completely clear the RAM and internal storage of garbage.
Before this procedure, be sure to back up your data via Mi Cloud or your computer. Reset will delete all contacts, photos and apps. Path to action: Settings → About phone → Reset → Erase all data.
An alternative to a full reset is a system upgrade. Often newer versions of MIUI have patches that optimize memory usage. Check for updates in About Phone → MIUI.
⚠️ Warning: Before resetting, make sure that the battery is at least 60%. interruption of the reset process may result in the inability to boot the operating system.
After the reset, the phone will work like new, but in the first 30 to 60 minutes, the system will be busy indexing files and updating applications, so during this period, heating and increased RAM consumption are possible.
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Regular reboot and control of background applications is more effective than installing third-party “accelerators” that consume resources themselves.