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

Xiaomi Redmi Note 9 Pro remains one of the most popular mid-range smartphones even years after its release. However, over time, many users face slowdowns: apps open for a long time, animations “brake”, and the battery dies faster than usual. The reasons can vary from overloaded memory to outdated firmware. Fortunately, you can return performance without visiting a service center.

In this article, we will analyze 10 proven ways to speed up the Redmi Note 9 Pro – from basic (cleaning the cache, disabling animation) to advanced (setting up) MIUI, All methods work on current versions of firmware and do not require root rights. MIUI, which few people know, but which give the maximum increase in productivity.

1.Diagnostics: Why is the Redmi Note 9 Pro slowing down?

Before you start optimizing, it is important to understand the root of the problem.

• 📱 Overloaded RAM – background processes “eat” resources.
• 🗑️ Cluttered storage – less than 10% of free disk space is critical to speed.
• 🔄 Older Firmware - New Versions MIUI optimized better.
• 🔋 Worn-out battery – when degraded below 80% smartphone forcedly limits performance.
• 🛠️ Work failures MIUI — Bugs in the shell can cause lags.

To accurately identify the bottleneck, follow the following steps:

1. Go to Settings → About Phone → MIUI version and check the relevance of the firmware.
2. Open the Settings. → Memory and see how much space is left.
3. Launch Security → Optimization – the system will show a list of problems.

If your free memory is less than 5 GB and your optimization list is more than 10 points, start cleaning.+ Version - Update.

2. Cleaning the system: remove garbage and cache

The first and easiest way to speed up a smartphone is to free up space and clear the cache. On the Redmi Note 9 Pro, there are several ways to do this:

Integrated cleaning utility MIUI

MIUI has a built-in tool to remove unnecessary files:

1. Open the Security app (shield icon).
2. Go to the Cleanup tab.
3. Press Deep Clean and wait for the scan to be completed.
4. Delete all files found (especially pay attention to Residual Files and Application Cache).

This method removes up to 1-3 GB of garbage, but does not touch user data.

Manual cleaning of the application cache

Some apps (like Facebook, Instagram, instant messengers) accumulate gigabytes of cache to manually clean it:

1. Go to Settings → Applications → Application Management.
2. Select the app (start with the “heaviest”).
3. Press Warehouse. → Clear the cache.

⚠️ Warning: Do not clear the cache of system applications (such as Settings or Phone) – this may cause crashes.

2.3 Deletion of duplicates and unnecessary files

MIUI has a hidden function of searching for duplicates:

1. Open Files (file application).
2. Go to the Category tab → Duplicate.
3. Select unnecessary copies and delete them.

Check the Download folders and DCIM — There are often unnecessary files.

3. Optimization of RAM (RAM)

The Redmi Note 9 Pro has 6GB of RAM, but even that may not be enough if the background processes are not optimized. RAM:

Restriction of background processes

MIUI allows you to manually limit the number of applications running in the background:

1. Go to Settings → Special Opportunities → System Optimization.
2. Select the Limitation of Background Processes.
3. Set the value Standard Limit or Strict (if you want maximum performance).

This will reduce battery consumption and free up to 1-1.5 GB. RAM.

3.2. Cancel animation

Interface animations MIUI They look beautiful, but they slow down to turn them off:

1. Activate Developer Mode (go to Settings → About Phone and click on MIUI Version 7 times).
2. Back to Settings → Additionally. → For developers.
3. Find the items: Window animation scale → Disable animation scale transition animation → Disable animation duration animation → No animation

After that, the interface will react instantly, especially when opening and closing applications.

Use of the "Light Mode" function

MIUI It has a hidden “Light Mode” that simplifies the interface and reduces the load on the system:

1. Go to Settings. → Screen.
2. Select Light Mode (may be called Simplified Mode).
3. Activate it and restart the smartphone.

This mode disables unnecessary visuals and background processes, which gives an increase in 10-15% of performance.

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Turning off animation and limiting background processes is the fastest way to speed up the interface without losing functionality.

4.Set up MIUI for maximum performance

MIUI It offers a lot of hidden features that you can use to optimize.

Disabling unnecessary system applications

Many pre-installed apps (Mi Video, Mi Music, GetApps) run in the background and slow down the system.

1. Go to Settings → Applications → Application Management.
2. Select an unneeded app (such as Mi Video).
3. Click Disable (Do not delete!).

Setup of auto-start applications

Many apps automatically start when you turn on your smartphone.

1. Go to Security. → Auto-start.
2. Turn off auto-run for all applications except instant messengers and system services.

This will reduce the loading time of the system and free up RAM.

Optimization of energy conservation

Energy saving mode can limit productivity, so that you can avoid this:

1. Go to Settings → Battery and Performance → Energy Saving Mode.
2. Choose Performance (if you want maximum performance) or Balanced (optimum).
3. Disable the Adaptive Battery – it artificially limits the background processes.

Critical: If your battery is worn out by more than 30%, Performance mode can accelerate degradation.

5. Update firmware and reset settings

Outdated firmware is one of the main reasons for slowdowns.Redmi Note 9 Pro gets updates MIUI It is important to keep an eye on the relevance.

Verification and installation of updates

To update MIUI:

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version is available, download it and install it.

Updates often include optimizations for specific models, so after the upgrade, the smartphone can run faster.

5.2 Reset to factory settings

If nothing works, the last option is a hard reset, which will delete all the data, but return the smartphone to a "clean" state.

1. Make a backup copy of important data (photos, contacts, messages).
2. Go to Settings → About the phone → Reset settings.
3. Select Reset all settings and confirm the action.

⚠️ After resetting the first 2-3 days, the smartphone can work slower than usual – this is normal, since the system indexes files and optimizes background processes.

6. Advanced methods: for experienced users

If the basic methods don't work, you can try more radical methods, they take longer, but they give you a noticeable increase in productivity.

Installation of a custom core (requires unlocking of the bootloader)

Castom cores (such as FrancoKernel or Perseus) optimize processor and memory performance, but they require:

1. Unlock the bootloader (officially via Mi Unlock Tool).
2. Install custom recovery (TWRP).
3. Swipe the core through recovery.

This is a risky method – if you make a mistake, a smartphone can turn into a “brick”, recommended only for advanced users.

6.2. Disconnection MIUI Optimization (requires root)

MIUI It has built-in optimization that sometimes conflicts with user settings to turn it off:

1. Get root rights (for example, through Magisk).
2. Install the app MIUI Optimization Disabler from Magisk Modules.
3. Reboot your smartphone.

This will give you more control over the system, but it can cause some functions to function in an unstable manner. MIUI.

6.3 Use. ADB optimizing

Through ADB You can turn off unnecessary system components without root, for example, to turn off ads in the Internet. MIUI:

adb shell pm uninstall --user 0 com.miui.systemAdSolution

A complete list of commands for optimization:

• 🚫 Disable Advertising: Adb shell pm uninstall --user 0 com.miui.systemAdSolution
• 🔄 Disable automatic update check: adb shell pm uninstall --user 0 com.android.updater
• 📱 Disable Mi Video: Adb shell pm uninstall --user 0 com.miui.videoplayer

⚠️ Attention: Misuse of the right ADB You can crash the system. Before you execute the commands, back up.

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Before use ADB-Check their relevance to your version MIUI. Some packages may differ in new firmware.

7.Optimizing for Games: How to Speed Up FPS

If the Redmi Note 9 Pro is slowing down in games (PUBG Mobile, Genshin Impact, Call of Duty, and other methods:

7.1 Enable Game Turbo Mode

MIUI It has a built-in gaming accelerator:

1. Open Settings → Special features → Game Turbo
2. Activate the mode and add games to the list.
3. In Game Turbo settings, select Performance and disable Limitation FPS.

This will increase frame rate but reduce battery life.

Reduced screen resolution

High-resolution games put a lot of stress on the processor, to reduce the load:

1. In the game settings, select permission 720p (HD) instead 1080p (FHD).
2. Turn off the smoothing and shadowing.

It can increase. FPS 20 to 30%.

7.3 Use of GPUTurbo

Redmi Note 9 Pro supports GPUTurbo technology, which optimizes the GPU to activate it:

1. Install the latest version of MIUI.
2. Go to Settings → Additional → For developers.
3. Find the GPUTurbo option and turn it on.

This is especially useful for heavy 3D-game.

FAQ: Frequent questions about Redmi Note acceleration 9 Pro