How to speed up Xiaomi Redmi 9: a complete guide to optimization

Xiaomi Redmi 9, based on the MediaTek Helio G80 processor, has become a hit in the mid-range segment, offering excellent value for money. However, as time passes and new versions of the MIUI shell come out, owners begin to notice a gradual decline in performance. This is a natural process for any Android device, as applications become heavier and system processes become overgrown with new background tasks.

Before you think about buying a new gadget, you should try comprehensive optimization that can return the former abruptness of your device. Often the problem lies not in the hardware, but in the software debris that accumulates for months. Proper tuning of animations, cleaning the cache and competent management of background processes can give an increase in productivity up to 30-40%, which will significantly improve the user experience.

In this guide, we will discuss proven methods to help speed up your Redmi 9. We will not offer risky methods like flashing, which can lead to loss of warranty or data. All recommendations are safe and require only careful follow-up steps in system settings.

Analysis of current performance and system updates

The first step to speed up Xiaomi should be to diagnose the current state of the system. Often users ignore updates, considering them only a way to add new features, but security patches and code optimization are critical for stability. Go to the Settings menu → About the phone and check the version of MIUI. If an update is available, installing it can solve many hidden bugs that cause lags.

However, if your phone is stable and the new version weighs more than 2GB, it may be worth holding off on the upgrade. On devices with limited storage, new firmware may be slower due to increased resource requirements. In the case of Redmi 9, which has modifications with 32 or 64GB of memory, every gigabyte of free space is in the account.

⚠️ Warning: Before installing a major system update, be sure to back up important data. The update process can take up to 30 minutes, and interrupting power at this point will lead to serious download errors.

It's also worth checking if the device is overheating. At high temperatures, the Helio G80 processor automatically lowers the clock speed to avoid damage, which manifests itself in the form of sharp brakes. If the phone is hot even in simple, it may be a problem with background processes or physical contamination.

💡

Use Xiaomi’s standard Security app for initial diagnostics, which will show the processor temperature and RAM loading in real time.

Cleaning of internal memory and optimization of storage

Full storage is the number one enemy for Android speed. When free space on the system partition drops below 10-15%, the speed of writing and reading data drops sharply, causing visible delays in the interface. For Redmi 9, with its modest by modern standards, memory storage is a necessity.

Start by analyzing what takes up the most space. Go to Settings → Storage and look at the distribution chart. Often the lion's share is taken by the messenger cache (Telegram, WhatsApp) and downloaded video files. Deleting old correspondence and media files can free up several gigabytes, which instantly affects the responsiveness of the system.

• 🗑️ Remove unused apps: Go to settings and uninstall programs you haven’t used in more than a month.
• 📸 Move photos and videos to the cloud or computer using Google Photos or Mi Cloud and enable the Free Place function".
• 🧹 Clean the gallery basket and Downloads folder regularly, as deleted files often stay there, taking up space.

And you also have to pay attention to the app cache, and unlike data, you can delete the cache without affecting the program, and do this through the application-specific menu in the Apps section, selecting "Clear the cache," and don't confuse it with the "Clean it all" button, which will reset the app settings.

Customization of animations and MIUI interface

Visual smoothness of MIUI is achieved through animations, which, however, consume GPU resources. If your Redmi 9 began to slow down when you fold applications or open menus, it is worth reducing the scale of animation, which will make the interface more "twitchy" but much faster in response.

To access these settings, you need to activate the developer mode. Press 7 times in a row on the build number in the About Phone menu until the message "You became a developer" appears. Then, in the expanded settings menu, find the item For developers. We are interested in three parameters: "Scale of window animation", "Scale of transition animation" and "Scale of animator duration".

⚠️ Note: Do not disable animations completely (meaning "No animation"), as in some versions MIUI This can cause the transitions between windows to be incorrectly displayed or the interface to freeze — 0.5x.

Also, you should disable the extra widgets on your desktop. Live wallpaper, weather, news and currency widgets are constantly consuming RAM and charging the processor with calculations. Remove anything that is not critical, leaving only application icons.

Background Process Management and Autoboot

One of the main features of the MIUI shell is aggressive management of background processes, but sometimes it works the other way around, allowing unnecessary programs to hang in memory. Monitoring application activity is key to speeding up Redmi 9. Go to the battery settings and select a specific application that you rarely use but should work (e.g., mail).

For other programs, especially games and heavy services, set a "Strictly Constrained" power saving mode, which will prevent them from running in the background and consuming CPU resources until you manually open them, and this is especially true for social networks, which are known for their "appetite" for RAM.

The table below shows the recommended settings for different types of applications on Xiaomi:

Also, remember to check the boot list. Many apps are self-registered when installed. Turn off auto-start for anything that shouldn't start right after the phone is turned on, which will speed up the booting and reduce the initial RAM load.

Use of Extended Developer Settings

For advanced users who want to make the most of their Xiaomi, there are hidden settings in the developer menu. In addition to changing the scale of animation, you can forcefully limit the number of background processes. Find the "Limit of background processes" and select the value "No more than 2 processes".

This measure will radically free up RAM, but could lead to apps being unloaded more often and requiring a reboot when returned to them. For a Redmi 9 with 3 or 4GB of RAM, this could be an effective solution if you don't actively use multitasking.

Also worth noting is the option "Enable 4x MSAA." It's designed to improve graphics in games, but on budget processors can cause overheating and performance declines. Make sure this feature is turned off if you don't experience artifact issues in games.

⚠️ Warning: Be careful with other settings in the developer menu. Changing settings you are not sure about can lead to system instability or data loss.

Another useful feature is to disable debugging over USB if you don't need it right now.Although it doesn't affect speed much, it's a potential security hole and can create unnecessary interruptions in the system.

💡

Limiting background processes is the most effective way to speed up work on devices with low RAM, but it requires getting used to constantly restarting applications.

Resetting settings as a last resort

If none of these methods helped speed up the Redmi 9, the last but most effective option is a full factory reset, which will remove all data, applications and settings, returning the phone to the “out of the box” state.

Before performing this procedure, be sure to save all important contacts, photos and documents to an external medium or to the cloud. the reset process will take about 10-15 minutes. Once turned on, the phone will work as quickly as possible, since all software "junk" will disappear.

Restore applications gradually by observing how the system behaves. One of the previously installed applications may have been in conflict with the system and you didn't even know it. A clean installation often works wonders with the performance of older devices.