Xiaomi’s Redmi Note 9 remains a popular device due to its excellent price-performance balance, but over time users may notice a decline in performance, a natural process associated with cache accumulation, application updates and increased requirements for MIUI resources. To return the device to its former sharpness and responsiveness, you need to conduct comprehensive optimization, starting with basic interface settings.
Owners often find that RAM is occupied with background processes, and internal storage is filled with temporary files. Proper cleaning and reconfiguration allow you to significantly extend the life of comfortable use of the gadget without having to buy a new model. In this article, we will discuss proven methods that will help you forget about brakes and freezes.
Basic System Cleaning and Memory Management
The first step to speed up your Redmi Note 9 should be to review the free space. When internal memory is over 85% full, the speed of writing and reading data drops, causing visible delays in the interface. Use the built-in Security app to remove debris, but don't just limit yourself to surface cleaning.
Deeper analysis requires manually checking folders with heavy files. Often users forget about uploaded videos in messengers or duplicate photos that take gigabytes. Freeing up even 2-3 GB can give a tangible increase in performance when running heavy applications.
- 🗑️ Remove unused apps you haven’t run in the past month.
- 📸 Transfer photos and videos to your computer or cloud storage.
- 📉 Clear the social media cache through the settings of each app separately.
⚠️ Note: Do not delete system files or folders with unknown names at the root of internal memory, as this may cause the operating system to malfunction.
☑️ Checklist for memory cleanup
Optimization of the interface and animations MIUI
MIUI is famous for its beauty, but the abundance of animations can create the illusion of slow work on mid-range processors. The developer menu contains options that reduce the time between screens. It doesn't increase the power of the processor, but makes the system's response to your actions instantaneous.
To access hidden settings, you need to click on the build number several times in the About Phone section. Once the developer mode is activated, you can find the item "Scale of animations." Changing the standard value of 1x to 0.5x or completely disabling animations visually speeds up navigation.
Also worth paying attention to the refresh rate of the screen if your version of the software allows you to adjust it. Although the Redmi Note 9 has a 60 Hz screen, incorrect power saving settings can lead to frame skipping. Turn off "Memory Extension" if it is active, as on models with slow storage it can even slow down.
| Animation parameter | Standard value | Recommended value | The effect |
|---|---|---|---|
| Window animation | 1x | 0.5x | Quickly open applications |
| Animation of transitions | 1x | 0.5x | Instant screen switching |
| Duration of animation | 1x | Off | Maximum response speed |
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If the interface becomes twitchy after the animation scale change, return the value of 1x – perhaps the problem in a particular launcher.
Background Process Management and Autoboot
One of the main reasons why the Redmi Note 9 is starting to slow down is the uncontrolled operation of applications in the background. The Chinese version of firmware and even the global MIUI allow programs to run independently, consuming RAM and battery power.
Go to the battery settings and find a list of applications. For programs that do not require instant notifications (such as marketplaces or games), set the No Limits mode only if it is critical. Otherwise, the system will freeze the processes itself, freeing up resources for the active task.
Autoboot is a special item in the Apps settings section that controls when you turn on your phone, and leave only messengers and alarms here so that when you turn on the Redmi Note 9, the processor is not loaded with a dozen simultaneous processes.
Disabling Advertising and System Services
Not only are MIUI advertising services (MSA) annoying, they also consume Internet traffic and CPU resources to download content, and disabling system advertising is a must-have for productivity, through privacy settings and in each system application.
The most important step is to turn off msa, find it in the app list, turn off the Internet, and click "Disable." If you don't work the first time, repeat the procedure several times, and turn off personalized recommendations in folders and on the desktop.
⚠️ Note: Complete removal of system applications through ADB can cause loss of warranty and unstable operation, use only built-in shutdown tools.
Remember that some system services may disguise themselves as ads, be careful what permissions you give to new applications, and access to location and microphone in the background is often used to collect data, which also strains the system.
Network setting and parameter reset
Slow internet can be perceived as a general slowness of a smartphone. If pages load for a long time, try resetting your network settings. This will not delete your data, but will return the Wi-Fi and Bluetooth configurations to factory values, eliminating possible conflicts.
In the section «SIM-maps and mobile networks" make sure the right type of network is selected. 5G (if supported by the region) or 4G on 3G In areas of poor coverage, it can speed up the response of the browser.