Xiaomi Redmi 9T, released in early 2021, is still a popular device due to its excellent autonomy and balanced performance. However, over time, even the most powerful Snapdragon 662 processor can struggle with modern heavy applications and MIUI shell updates. Users often notice that the interface is starting to slow down and software launches take longer than when buying.
There are many software methods that can help you get your device back to its original sharpness without having to replace the iron. In this article, we will look at proven optimization methods, ranging from basic cleaning to fine-tuning system parameters through an engineering menu. The right approach to system maintenance can extend the comfortable operation of the gadget for a long time.
Analysis of the current state of the system
Before we start taking drastic measures, we need to understand what exactly is loading the operating system. Often the cause of slow work is background processes that consume CPU and RAM resources. Owners of Redmi 9T with 4 GB RAM may face memory shortages more often than users of 6 GB versions.
The first step is to check the storage. A nearly full internal drive is a guaranteed interface lag. Android requires free space to create temporary files and cache. If the occupancy is greater than 90%, the speed of writing and reading data drops significantly, which directly affects the speed.
Use embedded tools or third-party utilities to diagnose it. Pay attention to apps that run automatically. Background social media and instant messenger activity can stealthily eat up to 30 percent of CPU resources. Turn off auto-update apps in the background if you don't use them all the time.
⚠️ Warning: Do not install questionable accelerator apps from the Play Market. These often become a source of advertising and additional workload on the system instead of helping to create a new system.
Basic cleaning and memory optimization
Xiaomi Redmi 9T should start by thoroughly cleaning garbage files. Xiaomi’s built-in Security app does a good job of basic tasks, but for deep cleaning it is better to use manual methods. Remove the cache of heavy applications such as TikTok, Telegram or Instagram, which tend to grow to gigabytes.
Pay special attention to the Downloads folder and the gallery basket. Often users forget about the hundreds of unnecessary screenshots and saved images that take up space. Moving media files to an SD card or to the cloud will free up a fast internal drive for the system to work.
☑️ Checklist of basic cleaning
After physical file cleaning, it is recommended to restart the device, which resets temporary processes and clears RAM from “hanging” tasks. Regularly rebooting at least once a week is a useful habit for maintaining Android health.
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Use the Memory Cleanup mode in the Security app only after closing all heavy applications for maximum effect.
Customization of animations and interface
The visual smoothness of MIUI often gives the illusion of speed. If the animations are too long, the phone seems slow. You can hide this through the developer menu. You need to activate this mode by quickly pressing the build number 7 times in the About Phone section.
Once activated, look for the Drawing section in the Developer Menu, and there are three key options: Windows Animation, Transition Animation, and Duration of Animation, and change the values from the standard 1x to 0.5x, or turn them off completely.
The effect of these changes is immediate: the transitions between screens become sharper and the response to touches is faster, and this does not increase the power of the processor, but significantly improves the subjective perception of the speed of the Redmi 9T.
What to do if the developer menu is missing?
Managing Autoboot and Background Processes
Controlling the autorun of applications is a critical step for owners of devices with 4GB of RAM. MIUI has a built-in control mechanism, but it doesn’t always work aggressively by default. You need to manually limit background activity for applications that don’t require constant notifications.
Go to your battery settings and select a specific application. Set the Power Saving Mode "Strictly Restricted" for games, navigators or photo editors that you rarely use, which will prevent them from running in the background and save battery life.
Also check the autoboot list. In the Apps menu -> Permissions -> Autostart, turn off all the extras. Leave only messengers if you care about instant notifications. The rest of the programs will run safely when you open them yourself.
| Type of application | Recommended status | Impact on speed |
|---|---|---|
| Messengers (WhatsApp, Telegram) | Auto-start enabled | High (notification required) |
| Social media | Auto-start is off. | Medium (heavy cache) |
| Games | Strict limitation | Low (if not started) |
| Banking applications | No restrictions. | High (Push notifications) |
⚠️ Warning: Disabling system processes in the boot menu may result in unstable interface performance or loss of communication.Be careful not to touch processes with the Android logo or MIUI.
Advanced Cleaning through ADB (for Advanced)
For those willing to go further, there is a method of removing system debris and pre-installed software through a computer. Using Android Debug Bridge (ADB) allows you to remove applications that cannot be removed by standard means, which frees up space and reduces the load on the processor.
You will need a PC to work, USB-cable and drivers installed. On your phone, turn on debugging. USB And you can connect the device to the developer menu, and you can execute packet removal commands.
adb shell pm uninstall -k --user 0 com.google.android.videosThis command, for example, will remove Google Movies. Be very careful: removing critical system components can lead to bootloop. Before removing any package, check its destination online.
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Using ADB is the most effective way to get rid of built-in garbage, but it requires technical literacy and caution.
Resetting settings as a last resort
If software optimizations fail to produce the desired result, the last proven method is a full factory reset, which puts the Xiaomi Redmi 9T back out of the box, removing all accumulated registry errors, file conflicts and hidden debris.
Before starting the procedure, make sure to back up important data. Photos, contacts and documents will be permanently deleted. After reset, take your time to restore all applications immediately from the backup. Install only the necessary software to assess the net performance of the system.
Often, after a clean installation, Android works much faster, as years of accumulated customization conflicts disappear, which is especially true if you upgrade from one version of MIUI to another without an intermediate cleaning.