How to clean RAM on Xiaomi Redmi 9

Xiaomi Redmi 9 smartphones, despite their popularity and availability, often face a shortage of RAM during operation. The Android-based MIUI operating system tends to accumulate background processes that slow down the interface over time. Users notice that apps open longer, and sometimes the system completely reboots the browser or game tabs.

There are several effective ways to free RAM, from standard tools to advanced settings. It is important to understand the difference between application cache and real-time memory processes. In this article, we will detail the algorithms of actions that will help to return the device to its former sharpness without losing personal data.

Before we get to the point of radical measures, we need to evaluate the current state of the system through the built-in monitors, which will allow us to understand which programs consume the most resources in the background. Redmi 9 models with 3 GB of RAM require cleaning much more often than on versions with 4 or 6 GB.

Standard MIUI Optimization Tools

The easiest way to free up resources is to use the built-in Security app, a system tool that is pre-installed on every Xiaomi device, which analyzes running processes and suggests completing those that consume excessive amounts of power and memory.

To start the procedure, you need to open the application, find the Cleanup section and press the corresponding button. The system will automatically close the background applications that are not included in the exception list. However, it is worth remembering that this method only gives a temporary effect, as Android seeks to fill the free space again to quickly run frequently used programs.

Deeper cleaning is possible through the menu of recent apps. By pressing and holding the Menu button (or swiping up and holding your finger in gesture mode), you will see the Clear button as a broomstick. A prolonged tap on this icon will trigger advanced analysis and memory cleanup, ignoring some system limitations.

Don't rely solely on automatic cleaners. They often leave heavy processes active, such as geolocation services or cloud synchronization, and manual control in this case provides a more predictable result for game performance.

Forced stopping of heavy applications

Some applications, like VK, Telegram, or marketplaces, have the ability to stay in memory even when you're not using them, and they consume resources to receive notifications and update the feed in real time, and they require tampering with settings to stop them completely.

Go to Settings → Applications → All Apps. Find a program that consumes a lot of resources. Click on it to open the control card. Here you are interested in the button "Stop" or "Finish." Once clicked, the application will be completely unloaded from RAM before the next manual start.

• 🛑 Stopping allows you to instantly free up to 500 MB of memory if the application was active.
• ⚙️ In some cases, the Stop button may not be active for Google system services.
• 🔄 After stopping, the application will start again only with your direct participation.

There's also a Background Limit feature, which is in the same app settings menu, in Battery or Energy Saving, and if you select No Limits mode, you let the program run freely, but if you choose Saving Energy or Severely Limiting mode, the system will kill the process immediately after you fold the window.

⚠️ Warning: Forced shutdown of system applications such as Themes, Music or Explorer can cause the interface to work in an unstable way.

Set up extended memory through the developer menu

For advanced Redmi 9 users, a hidden settings section is available to help them manage their behavior more flexibly, and the developer menu contains parameters that affect the limit of background processes and the aggressiveness of closing them, and this is the most effective way to combat memory shortages.

To activate this section, go to Settings → About Phone and quickly click on the MIUI version seven times. After the message “You became a developer”, a new option will appear in the settings menu “Additional” → “For Developers”. Inside, we are interested in the “Applications” section.

You can find here the "Background Process Limit" option, which defaults to "No Limits," and if you change it to "No More than 2 Processes" or "No Background Processes," you'll have the system only remember the active application and the previous one. The rest will be forced to close.

There's also a "Do Not Stay Activity" option on this menu, which if you turn it on, the system will destroy any process as soon as the user turns off the application, which will radically free up RAM, but will cause it to boot from scratch when it comes back to the program, which can increase battery consumption.

Managing Autoboot and Permits

One of the main causes of memory overload is the auto-run of applications, many programs prescribe themselves to auto-boot to run with a smartphone. On Xiaomi Redmi 9, this process is controlled by a special service.

To control, go to Security → Permissions → Auto Start. This is a list of all the programs that start when you turn on your phone. It is recommended that you leave only messengers and alarms on. Browsers, games and stores can safely start manually as needed.

Disabling auto-start does not remove the application, but only prevents it from starting without the user’s knowledge, which significantly reduces the load on the processor and RAM in the first minutes after the device is turned on.

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After disabling autorun, restart your smartphone so that the changes take effect and the system reallocates resources.

Using Developer Mode for Animations

While this method does not clear physical memory directly, it visually speeds up the interface and reduces the load on the GPU, which indirectly affects the overall responsiveness of the system. RAM It's critical.

In the Developer menu, find the Drawing section, and there are three options: Windows animation, transition animation, and animation duration. These are set to 1x by default. Change all three values to 0.5x or turn them off completely.

This action will make switching between screens instantaneous. The system will spend less time rendering transitions, freeing up CPU cycles to handle tasks in the background. For owners of Redmi 9, this is one of the most noticeable ways to speed up.

• 🚀 Reduced animation creates the illusion of a more powerful processor.
• 👁️ Visually, the interface becomes sharper and more responsive.
• 🔋 Reducing the load on GPU It may slightly increase battery life.

⚠️ Attention: Complete shutdown of animations (0x) It can make the interface twitchy and unusual. 0.5x Balance between speed and smoothness.

Expanding Memory with Virtual RAM

Newer versions of the Redmi 9 MIUI include a memory extension feature that allows you to reserve some of your internal storage (ROM) for RAM, and works on the principle of a swap file in Windows.

You can activate the function from the Settings menu → Additional settings → Expand memory. The system will offer to add 1 to 3 GB of virtual memory. Once turned on, the phone will require a reboot. This method is especially relevant for models with 3 GB of physical memory.

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Virtual memory is slower than physical memory, but it prevents applications from crashing out of memory when resources are scarce, allowing more tabs to be kept open.

Consider that using this feature increases the wear and tear of the built-in drive, as writing and reading are more intense, but on modern flash memory, this wear is minimal in terms of the life of the smartphone.

If you are actively using heavy games or multitasking, it is a reasonable step to enable this option. In normal use mode (social networks, calls, YouTube), the difference may not be so noticeable, but the safety margin of the system will increase.

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