How to clean up the RAM Xiaomi Redmi Note 9T: the complete guide

Owners of the popular Xiaomi Redmi Note 9T smartphone often face a situation where the device starts to run slower, applications open longer than usual, and the interface slows down when switching between tasks. The main reason for this behavior is overflow of RAM, which is responsible for storing temporary data of running processes. Unlike built-in storage, RAM is constantly running, and its shortage is felt instantly, requiring immediate user intervention to normalize the system.

Android’s MIUI-enabled operating system can manage resources by itself, closing inactive tabs and background services. However, over time, digital waste, hanging processes, and a cache that is no longer useful accumulate in memory. Regularly cleaning up RAM on the Redmi Note 9T can speed up the launch of heavy apps and games by up to 30%. In this article, we’ll look at all effective resource release methods, from standard system tools to advanced settings for power users.

Standard cleaning methods through MIUI interface

The easiest and most affordable way to free up resources is to use built-in shell tools. Xiaomi has a handy Cleanup widget, which is usually located on the desktop or in the Tools folder. Clicking on the broomstick icon starts scanning the system and automatically closes the background processes consuming RAM. This is a basic level of optimization that is recommended to be performed daily to maintain stability.

More detailed control is done through the multitasking menu. To do this, you click on the Menu button (square or three bars depending on the navigation settings) or swipe from the bottom up with a delay. In the list that opens, you will see all running applications. By clicking on the Clean button (usually a cross or an X) you will force the processes to be completed. It is important to understand that the Android system tends to quickly restore frequently used applications to memory, so this method gives a temporary but quick result.

• 🧹 Click the Security widget and select Cleanup to automatically remove garbage.
• 📱 Press the multitasking menu button on 2-3 Seconds to instantly close all background applications.
• ⚙️ Use the “Accelerate” button in the notification curtain to quickly reset the cache of processes.
• 🔄 Restart the device through the power menu to fully update the memory structure.

⚠️ Note: Forcing system processes to close through the multitasking menu can lead to temporary instability of the interface, as some services must be constantly running.

For a deeper cleaning, use the Security app, which is preinstalled on each Redmi Note 9T. Inside the Memory section, you can see the RAM usage schedule and the list of the heaviest applications, and see which program is currently consuming the most resources, and if necessary, delete it or limit background activity.

Application and background processes management

One of the main reasons for the lack of free memory is social networks and instant messengers that run in the background all the time. Apps like Telegram, Viber or Instagram can take up hundreds of megabytes of RAM, even if you are not using them right now, and to fix this, you need to go to your phone settings and find the Apps section, where you can fully manage the installed software.

Select a specific heavy app from the list and go to its properties. Here you are interested in "Other permissions" or "Out-start." By disabling auto-start, you will prevent the program from activating itself after turning on the smartphone, which will significantly reduce the load on the processor and RAM in the first minutes after unlocking the screen.

And every app has a Stop button in its properties, which force it to terminate the process right now, and if the app is system and the button is inactive, you can try the Background Activity Restriction in the battery's advanced settings, which will make the system more aggressively kill the process when the screen is off, freeing up resources for the user's current tasks.

• 🛑 Turn off auto-start for all unnecessary apps in the Apps section» → «Permits».
• 🔋 Set the power saving mode "No restrictions" only for important programs, transfer the rest to saving mode.
• 📉 In the battery settings, find “Background Activity” and limit the number of simultaneous processes running.

⚠️ Warning: Completely disabling background activity for Google or Mi Cloud system services may result in missing notifications and data synchronization.

The desktop widgets are worth a special attention. Live wallpaper, constantly updated news feed and weather widgets consume a significant amount of RAM. By removing excess tinsel from the Redmi Note 9T home screen, you not only improve the visual component, but also free up valuable megabytes for the main programs to work.

Using Developer Mode to Optimize

For advanced users who want to get maximum control over the device, there is a hidden “Developers” menu. To activate it on the Xiaomi Redmi Note 9T, go to Settings → About Phone and quickly click on the MIUI version seven times. Once the corresponding notification appears in the settings menu, a new section will appear where you can fine-tune the system operation.

Inside the developer menu, we're interested in the "Limit of Background Processes" option, which is the default option for the system to decide how many applications to keep in memory. By changing this parameter, you can severely limit their number. For example, by selecting the "No More than 2 Processes" option, you guarantee that only the most necessary services will work in the background, and the rest will be unloaded from RAM.

Another useful feature is to turn off animations. While this does not directly increase the amount of physical memory, it reduces the load on the GPU and makes the interface visually faster. Find the paragraphs "Window animation", "transition animation" and "Duration of animation" by setting the values 0.5 or "No animation".

• 🔧 Activate Developer Mode by quickly clicking on the build number in About Phone».
• 🚫 Set a background process limit to a “Standard Limit” or “Not More than 4 Processes” value».
• 🎨 Reduce the scale of animations to 0.5x to speed up the interface response.
• 📡 Turn off Bluetooth Absolute Volume if you have problems with the sound in your headphones.

⚠️ Note: Do not change settings that you do not know the value of, especially those related to debugging. USB or choice of configuration USB, not to disrupt the system.

In the same section, the “Remember Actions” feature is available, and if it is enabled, the system tries to keep applications stateless when memory is scarce, which can lead to lags, and disabling this feature will cause Android to clean up memory more aggressively, which is useful on devices with less RAM.

Memory consumption analysis through engineering menu

You can use built-in statistics to diagnose what is eating away at your memory. Unlike third-party apps, system meters show the real picture without distortion. Go to Settings → Advanced Settings → Memory Usage Statistics. Here you will see a graph for the last 3, 6 or 12 hours.

Graph analysis reveals voracious applications, and if you see a surge in consumption that corresponds to the time a particular game or editor is used, it is incorrectly freeing up resources after closing, in which case only a complete reinstallation of the application or waiting for an update from the developers will help.

It's important to distinguish between memory and cached memory. Android tries to fill free RAM with a cache of frequently used applications so that they open faster. When you run a heavy game, the system will displace this cache. So fighting every busy megabyte doesn't always make sense if the phone runs smoothly.

💡

If the statistics show that the memory is filled immediately after turning on the phone without your actions, check the list of recently installed applications – perhaps one of them contains malicious code.

Third-party utilities: necessity or harm?

Google Play has thousands of client apps that promise to speed up a phone in one click. Popular names like Clean Master, CCleaner or Files by Google do know how to clear cache and close processes. But on modern versions of Android, their effectiveness is controversial, because the system itself manages memory well.

The main problem with these utilities is that they consume resources themselves. To kill the process, the cliner has to hang in the background, monitor the memory and periodically start. This puts additional strain on the Redmi Note 9T processor and drains the battery. Often, after cleaning, the memory is filled again after 5 minutes, and the cycle repeats.

However, there are some useful tools that don't hang in the background all the time, but work on demand, like file managers with space analysis or specialized tools to clean the cache of specific social networks, and use them carefully when checking the permissions they request when installing.

• 📉 Avoid installing “accelerators” that promise to increase your speed. RAM Software is physically impossible.
• 🧹 Use a built-in cleaner MIUI Instead of external analogues for basic hygiene.
• 🔍 Check the permissions of the client applications for access to contacts and geolocation.

⚠️ Warning: Some aggressive clinchers may delete important system logs or authorization cache, which will result in a crash from accounts in apps.

If you do decide to use third-party software, prefer tools from well-known antivirus vendors or the file system from Google itself. They act more delicately and less often conflict with the MIUI shell.

Cardinal measures: resetting and flashing

If the software methods don't work, and the Redmi Note 9T continues to slow down even after cleaning, it's possible that the system has accumulated critical errors or file conflicts. In this case, the way to reset to factory settings. Be sure to back up all the important data before doing so, as it will be deleted.

Reset can be done through the menu "Settings» → «The phone» → «Settings reset. Select "Erase all data." Once you reboot, you'll get a clean system where RAM works as efficiently as possible, because you'll have no accumulated debris over the months of use.

In extreme cases, when even a reset doesn’t help (which is rare and indicates memory wear or hardware problems), it may be necessary to flash the device through the computer using the Mi Flash Tool utility.This is a complex process that requires unlocking the bootloader, and it is recommended only for advanced users.

Once you're back to factory settings, don't rush to install hundreds of applications at once. Install them gradually by observing how the system behaves, which will help identify the program that is causing memory problems if they recur.

💡

A complete data reset is a radical, but often the only way to return performance to an old smartphone if software errors become irreversible.

Frequently Asked Questions (FAQ)