Xiaomi Redmi 9, equipped with NFC module, remains a popular device due to its affordable price and functionality, but over time owners may notice a decrease in performance. It is a natural process associated with the accumulation of system debris, updating applications and features of the MIUI shell, which requires significant resources. However, unlike many competitors, this device has a hidden potential that can be unlocked with competent configuration.
In this article, we will explore a comprehensive approach to optimization that will affect both user-visible interfaces and hidden system parameters. You will learn how to properly manage RAM, disable unnecessary background processes and customize animations to create the illusion of faster system operation. It is important to understand that the acceleration of the phone is not one magic button, but a set of actions.
Before you start taking radical steps like resetting, try a series of software manipulations that are safe, reversible, and in most cases, allow you to extend the comfort of the device for a year or more, and we will focus on the methods that give you real increases in FPS and responsiveness touchscreen.
Analysis and cleaning of internal memory of the device
The first and most critical factor affecting the speed of Redmi 9 is the internal storage capacity. When space is minimal, the Android operating system starts to run slower due to data fragmentation and lack of space to caching temporary files.
Particular attention should be paid to the folders of messengers such as WhatsApp and Telegram, which can inflate up to tens of gigabytes due to automatically downloadable media files. Deleting old videos and unwanted images is the most effective way to free up space without losing system stability. APK after updating the programme.
To automate the process, you can use the built-in Security application, which is a standard component of the MIUI shell. It allows you to quickly find duplicates, large files and remnants of deleted applications. You should not ignore the system recommendations, but you also do not need to blindly trust the cleaning with a single touch - always check what exactly the algorithm is going to delete.
- 🗑️ Remove the cache of heavy apps such as browsers and social media through your storage settings.
- 📸 Move photos and videos to a microSD card or cloud storage to free up the main partition.
- 📦 Uninstall pre-installed games and programs you don’t use (bloatware).
- 📂 Check the folder. DCIM/.thumbnails, where you can store miniatures of deleted photos that take gigabytes.
⚠️ Warning: When using third-party software-cleaners (Clean Master and analogues), be careful: they can aggressively unload the necessary processes from RAM, which will lead to rebooting applications and, as a result, to greater battery consumption.
💡
Use the Cleanup feature in the standard Security app once a week, but always check the list manually before completely deleting files.
Management of RAM and background processes
The NFC module in Xiaomi Redmi 9 runs in the background, waiting for tags to be read, but this is not the only thing that consumes resources. The MIUI shell is famous for its aggressive memory management policy, but some services still manage to eat gigabytes of RAM. Manual control of running applications allows you to significantly increase the responsiveness of the interface.
In the developer settings, which you can access by clicking seven times on the MIUI version, you can find a setting for limiting background processes. By setting a limit on, for example, 2 or 3 processes, you force the system to close unused applications. This can be useful for older versions of games, but can disrupt messengers if you do not configure exceptions.
And you should also look at Expand Memory, if it's available in your firmware version, which allows you to use part of your internal storage as virtual RAM, and while it doesn't get the speed boost of physical RAM, it prevents applications from crashing when resources are scarce.
You can use ADB commands to clean it up, but it requires a PC connection. A simpler way is to use the built-in Developer Menu > Inactive Apps, and you can force the services that you're not using right now to stop, but that are hanging in your memory.
Optimization of visual effects and animation
Visual smoothness is what gives the impression of speed in the first place. Xiaomi Redmi 9 features a 60Hz refresh rate screen, and standard MIUI animations can seem like a drag. Scaling down animation is a classic technique that instantly changes the perception of interface speed.
To change these settings, go to Settings -> Advanced Settings -> Developer. Find three animation-related items: "Window animation," "Jump animation," and "Animation duration." Change the value from 1x to 0.5x or even Off for maximum effect.
And you also need to turn off the live wallpaper and the heavy widgets on the home screen, which not only consumes battery power, but also constantly turns to the processor to update data. Static, dark wallpaper is the best choice for AMOLED or IPS matrices in terms of rendering performance.
- ⚡ Set the scale of animation 0.5x instantaneous menu response.
- 🌑 Use dark static wallpaper to reduce the load on the GPU.
- 🚫 Turn off the Widget Ribbon (swipe left) if you don’t use it, as it consumes resources constantly.
- 📉 Remove unnecessary weather and news widgets from your desktop.
⚠️ Warning: Turning off animations completely (off value) can make the interface twitchy and less understandable, as the visual link between opening and closing windows disappears. 0.5x.
💡
Reducing animation to 0.5x is the safest and most visible way to visually speed up any Android smartphone without the risk of data loss.
Configuring energy saving and battery operation
The state of the battery directly affects the frequency of the processor. In Xiaomi Redmi 9, as in many modern smartphones, with low charge or austerity mode on, the system artificially restricts the CPU to extend the running time. If you need top speed, make sure that the power saving mode is turned off.
In the app Security -> Battery, you can set profiles for each application. For games and heavy tasks, select a profile No Limits. This will prevent the system from "killing" the process or reducing its frequency, even if the application is running in the background. For regular calls and social networks, you can leave the standard mode.
It's also worth checking the battery health, because if the device is several years old, the degradation of the battery can lead to power surges, which causes the power controller to reset the CPU frequencies to avoid shutdown, in which case software optimization will only have a temporary effect.
Settings -> Battery -> Vorageous Apps -> Select App -> Without LimitationsDeep Optimization, available in some versions of MIUI, provides deep nighttime analysis, defragmentation of memory, and optimizes application launch, and is recommended to run it manually at least once a week through the Security app.
☑️ Weekly Battery Optimization
Comparison of acceleration methods
There are many ways to impact Redmi 9 performance, but not all are equally effective and safe. Below is a table that will help you choose the best strategy depending on your situation and level of training.
| Method | Efficiency | Difficulty | Risk of data loss |
|---|---|---|---|
| Cleaning up memory | Medium | Low. | No. |
| Cancel animations | Visually high | Low. | No. |
| Reset to factory | Maximum | Medium | Yes (full) |
| Flashing (Global/Custom) | Tall. | Tall. | Yeah (mistakes) |
As the table shows, the safest and most affordable method is a combination of cleaning and tuning animations. drastic measures such as flashing should only be considered by experienced users who understand the risks and have up-to-date backup.
⚠️ Note: Before performing a full reset, be sure to remove SIM-card and memory card, and make sure to remember the password from your Mi Account, otherwise the phone may lock after rebooting.
Resetting and system update
If the software methods did not produce the desired result, there are two ways: upgrade to the latest available version of MIUI or a full reset. System update often contains security and optimization patches that can fix the bugs causing the lags. You can check for updates in the Settings -> About Phone menu.
A full factory reset puts your phone back out of the box, which ensures that you remove all the accumulated debris, application conflicts, and missettings, and make sure you back up your contacts, photos, and important documents on your Mi Cloud or computer before doing so.
What to do if the phone brakes even after resetting?
The discharge process takes about 10-15 Once turned on, the phone will be like new, and you can reconfigure it by installing only the apps you really need. 9.