The situation when the once-quick smartphone begins to hang treacherously, familiar to every owner of Xiaomi equipment. the Redmi 9 model, released as a budget solution with a good margin of performance, over time can face a lack of system resources. Users often notice that the interface responds with a delay, and applications open longer than usual.
The main reason lies in the accumulation of system “garbage”, bloating the cache of applications and background processes that consume RAM. MIUI shell is known for its functionality, but it also requires competent management of CPU resources. If your Android device is slow, do not rush to carry it to the service center.
In most cases, software can solve the problem without having to do complicated firmware manipulations. Getting the developer settings right and cleaning up the storage works wonders even on older versions of software. Let's take a step-by-step algorithm that will bring your gadget back to its previous speed.
Diagnostics and analysis of the causes of slow work
Before we take any action, we need to understand what is stressing the system, often because of heavy gaming, social media, or just overcrowded internal storage, and when there is less than 10 percent free disk space, the speed of writing and reading data drops, causing the interface to lag.
The first step is to check the status of memory and processor through the built-in tools. The MIUI shell has a handy Security tool that shows the current load, and pay attention to how many background applications are running and which ones consume the most power.
And you also have to consider the physical wear and tear of the drive, because if the phone's been around for a few years and it's been used extensively to record video or install heavy games, the speed of flash memory might have been slowed down, and it's a natural process, but you can minimize the impact.
For accurate definition of heavyweights, use the built-in activity monitor:
- 📱 Go to Settings. → The phone. → All options and 7 times click on the version MIUI, to unlock the developer menu.
- 🔍 Go to advanced settings and find the item "Memory usage statistics».
- 📉 Analyze the process list and identify applications that occupy more than 500 MB in the background.
⚠️ Note: If you see a process called “system” or “android” consuming abnormally high resources, this may indicate a system services malfunction or viral activity.
Don't ignore the overheating of the case. If the phone is hot, the system automatically lowers the CPU frequency (trottling) to avoid damage, and in this state, the lags are a defense response, not a software error.
Cleaning the system and optimizing the storage
The most efficient way to speed up Redmi 9 is to free up disk space. Android requires a free space for temporary files and swaps. If the memory is full, the phone simply has nowhere to turn around to perform operations.
Start by removing unused apps. Often we install just-in-case programs and forget about them, and they keep hanging in the background. Also check the Downloads folder, where APK installation files, old documents and duplicate photos accumulate.
Pay special attention to messengers like Telegram and WhatsApp, which can take up tens of gigabytes of cache, saving all the photos and videos you see, and cleaning up the cache inside the apps themselves will make room without losing any correspondence.
Use the following checklist for quick cleaning:
☑️ Redmi 9 memory cleanup
After manual cleaning, use the built-in optimizer. Click on the broom icon in the Security app. This tool will close the background processes and delete temporary files that are not valuable to the system.
It is important to understand the difference between cleaning the cache and cleaning the data. Resetting the application data will remove your logins and settings, so use this feature only for problem programs that you are ready to reconfigure.
Customization of the interface and animations MIUI
The visual smoothness of the Redmi 9 is largely dependent on the animation settings. The MIUI shell defaults to beautiful but heavy transitions between screens. On budget processors, this can create the illusion of brakes, even if the system is coping with tasks.
To access hidden options, you'll need a developer menu. As mentioned earlier, activate it by clicking 7 times on the firmware version. Then, in the Developer menu, look for the Drawing section.
So here are three key parameters: "Window animation," "Transition animation," and "Duration animation." Change them from 1x to 0.5x, or even "No animation," which makes the interface sharper and more responsive.
Additional settings to improve productivity:
- 🚀 Enable the option “GPU Acceleration» (GPU rendering, if it is available in your version of Android.
- 🛑 Disable Process Background Animation to prevent the system from wasting resources on drawing closed windows.
- 🎨 Reduce font size and display scale in normal screen settings – fewer elements on the screen are easier to render.
The impact of the design theme on speed
Remember that oversimplifying animations can make your phone less comfortable. Find a balance where speeds increase, but navigation doesn't get twitchy.
Managing Autoboot and Background Processes
One of the main reasons why Android phones are lagging is the uncontrolled autoload of apps. In the Xiaomi ecosystem, many programs are prescribed to autorun to receive notifications, but this eats up RAM.
Go to the battery settings and find AutoStart. Do a list revision and leave only messengers and alarms on. Social media, games and stores can safely start manually as needed.
There's also a memory extension feature that uses a portion of the internal storage as virtual RAM. On a Redmi 9 with a small amount of RAM, this can be useful, but if you have fast memory, it's best to leave it as it is so as not to wear out the drive.
Comparison of the impact of functions on productivity:
| Function | Impact on speed | Impact on the battery | Recommendation |
|---|---|---|---|
| Auto-launching applications | Strong deceleration | High-end spending | Turn off all the excess. |
| Expansion of memory | Minor increase | Minimum | Insert if RAM is short |
| MIUI Animation | Visual lags | Average expenditure | Reduce to 0.5x |
| Synchronization of the cloud | Twisting the network | High-end spending | Only on Wi-Fi. |
⚠️ Warning: Do not disable system services such as Mi Cloud, Mi Service or Security unless you are sure of their purpose.
Check the list of applications you have run regularly, and if you see a program that hasn't been used in days but is active, force it to stop.
System update and resetting
Software bugs in older firmware versions often cause instability. Xiaomi regularly releases security and optimization patches. Check for updates in the Settings menu → About Phone → MIUI version.
However, if the phone is very old, the new version of Android can be heavier for hardware than the previous one, in which case, if you have recently upgraded and the phone has started to brake, sometimes a rollback to the previous version helps, although it is a difficult procedure.
If the software methods don't work, the radical but effective way is to completely reset to factory settings, which will remove all data, applications and debris, returning the phone to the "out of the box" state.
Procedures before discharge:
- 💾 Make a full backup of contacts, photos and documents to your computer or the cloud.