How to Increase Xiaomi Redmi 9 Performance: A Complete Guide with Proven Methods

Xiaomi Redmi 9 is one of the most popular budget smartphones, but over time even it begins to slow down. The reasons can vary from full memory to outdated firmware. In this article, we will discuss 15 working ways to return the smartphone to performance without buying a new device.

It is important to understand that performance depends on two factors – hardware (processor, RAM) and software (system optimization, background processes).We will focus on software methods that do not require disassembling the phone or installing custom firmware. Most tips will be suitable for other Redmi series models (Note 9, 9A, 9C), but taking into account the features of the Redmi 9 based on the MediaTek Helio G80 and MIUI.

If your smartphone is slower after upgrading, overheats frequently, or apps are open for a long time, this is for you. Let's start with simple steps and gradually move on to deeper settings.

1. Cleaning up memory and cache: the first step to speeding up

The most common cause of brakes is filled storage and overloaded cache. Redmi 9 has only 32/64 GB of memory, and when less than 10% of the available space is left, the system begins to work unstable.

• 🗑️ Delete unnecessary files: Go to Settings → Storage and analyze what takes up the most space. Pay special attention to the folders Download, DCIM (photo/video and WhatsApp/Media (chat-media).
• 🧹 Clear the app cache: In the same storage section, click "Clear the cache." This is safe - temporary data will be deleted, but not personal files.
• 📱 Use a built-in cleaner: in MIUI There is a tool "Cleaning" (Security) → Cleaning. It removes debris, remnants of deleted applications and duplicate files.
• ☁️ Move files to the cloud: photos and videos can be automatically uploaded to Google Photos or Mi Cloud, and then delete local copies.

After cleaning, restart your smartphone. If there is still little space, consider extending your memory with a microSD (up to 512 GB). However, remember: A1/A2 memory cards are faster, but even they lose in the speed of internal memory.

⚠️ Warning: Do not use third-party cleaners from Google Play (such as Clean Master or CCleaner).They often consume more resources than they free up and can delete important system files. Built-in tools MIUI enough.

2. Optimization of background processes and autoboot

MIUI is known for aggressively controlling background processes, but sometimes it works against the user. Many applications (especially instant messengers and social networks) run automatically and consume resources.

• 🚫 Turn off autoboot: go to Settings → Annexes → Application management → Autoboot: Turn off autoboot for all but the most essential applications (e.g. Telegram or WhatsApp).
• ⏸️ Limit background activity: in the settings of each application (Settings) → Annexes → [name] → Battery) select "Limit background activity».
• 🔄 Set up sync: Turn off automatic sync for unnecessary accounts (such as Mi Account if you don’t use it) in Settings → Accounts and synchronization.

Pay special attention to Facebook, Instagram and other social networks — they often hang in the background and consume up to 20% of battery life. If you do not use them constantly, you should open them through the browser.

After these changes, the smartphone will hold the charge longer and react faster to your actions. If some applications stop updating in the background (for example, no notifications come), manually refund them the rights.

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To quickly close all background apps, click on the “Recent” button and swipe up for all cards. MIUI 12+ can enable the “Close All” option in the gesture settings.

3. Developer Settings: Hidden Opportunities for Acceleration

Redmi 9 has a developer mode that allows you to fine-tune your performance, so you can activate it.

1. Go to Settings. → The phone.
2. Click 7 times in a row on the item "Version" MIUI». You will receive a notification saying, “You are a developer!».
3. Return to the main settings menu – there will be a new section “For developers”.

Now let’s look at the key parameters that need to be changed:

• ⚡ Windows animation: set the value 0.5x Or turn it off completely (Disable). This will speed up the opening of applications. → The scale of window animation.
• 🖥️ GPU-acceleration: Enable “Enforcement of use” GPU» (For developers → Forced rendering on GPU). This will unload the processor, but can increase battery consumption.
• 🔄 Process Limitation: Select “Maximum 3 Processes in the Background” (For Developers) → This will free up RAM, but some applications will reboot when they return to them.
• 📶 Debugging by USB: Shut down if you don't connect your phone to a PC for development, and that closes the potential vulnerability.

⚠️ Warning: Do not turn on the “Do not turn off the screen” option in the developer settings, this will lead to overheating and rapid battery discharge. ART, If you do not understand their purpose.

Critical moment: on Redmi 9 with MediaTek Helio processor G80 forced GPU-Acceleration can cause artifacts in some games (e.g., in the game). PUBG Mobile or Call of Duty. If you notice graphical glitches, return the setting to its original state.

Window animation — 0.5x|Animation of transitions — 0.5x|Process limit - 3|Forced. GPU — insert!)|Debugging USB — disconnect-->

4. Update firmware and kernel: why it matters

Xiaomi regularly releases updates for Redmi 9 that optimize the processor and fix bugs, but many users ignore them for fear of losing data or encountering bugs. In fact, updates often increase performance by 10-15% due to:

• 🛠️ Memory leak corrections MIUI.
• 🔧 Optimizing the Linux kernel for MediaTek Helio G80.
• 🔒 Closing vulnerabilities that can slow down the system.

To update the firmware:

1. Go to Settings → About the phone → System update.
2. Click on "Check Updates." If a new version is available, download it.
3. Connect your phone to charge (don’t interrupt the update!).
4. After installation, reset the cache (in the same update menu).

If the automatic update does not work, you can install the firmware manually:

1. Download the latest stable version of MIUI for Redmi 9 (codenamed Lancelot) from Xiaomi’s official website.
2. Put the.zip file in the root of the phone’s memory.
3. In the update menu, click on the three dots in the top right corner and select “Select firmware file.”

⚠️ Note: Do not install firmware from third-party developers (such as LineageOS or Pixel Experience) if you do not have experience. IMEI Or camera problems on Redmi 9.

5. Battery and thermal optimization

Overheating and improper battery settings can artificially limit the performance of the Redmi 9. the Helio G80 processor at temperatures above 45 ° C begins trottling (reduced frequency), which leads to jerks in games and slow interface operation.

Here's how to avoid it:

• 🔋 Turn off the “Smart Battery Limitation”: in Settings → Battery → Battery settings deactivate this option. It limits background activity, but sometimes blocks important processes.
• ❄️ Control the temperature: do not use your phone in the sun or while charging for games. If the case is heated, let it cool for 10-15 minutes.
• 🔌 Use original charging: non-original adapters can cause overheating and unstable operation of the processor.
• 📉 Set up the performance mode: in Settings → Battery → Select Battery Mode to “Performance” (instead of “Balanced” or “Charge Savings»).

If your phone is warming for no apparent reason, check:

• Are there any navigation apps running in the background of Google Maps (they actively use GPS and processor).
• Have you installed any viruses (you can check it through Google Play Protect or Malwarebytes).
• Is the battery damaged (check wear in Settings → Battery → Battery condition).

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Performance mode in battery settings increases performance by 20 to 25 percent, but reduces battery life by 10 to 15 percent, and use it only when needed (e.g. for gaming).

6.Alternative launchers and lightweight applications

The standard MIUI launcher consumes a lot of resources due to widgets, animations and background processes, and replacing it with a lightweight counterpart can speed up the interface by 30-40%.

• 🏠 Nova Launcher: minimalist, with animation settings and no extra widgets. The free version is quite functional.
• ⚡ Lawnchair: open launcher with gesture support and low RAM consumption.
• 📱 Microsoft Launcher: Optimized for weak devices, integrated with Windows (if you use a PC).

Also replace the “heavy” applications with lighter versions:

Once you install an alternative launcher, turn off the standard one: go to Settings → Applications → Application Management → Launcher and click Disable. This will free up additional resources.

7.Reset to factory settings: Last chance

If all previous methods failed, it's a hard reset, which will bring the phone back out of the box, removing all user data, apps and settings. On Redmi 9, this often solves the problem of:

• Interface freezes.
• Frequent reboots.
• Mistakes in the installation of applications.
• A severe overheating for no reason.

How to perform the reset:

1. Backup important data (photos, contacts, messages) through Mi Cloud or Google Account.
2. Go to Settings → About the phone → Reset settings.
3. Select Reset All Settings (or Reset to Factory in older versions of MIUI).
4. Confirm the action and wait for the reboot (it will take 5-10 minutes).

After discharge:

• Don’t restore all apps at once – install them one at a time, checking performance.
• Do not transfer data from the backup if it was made on a “slowed” system – this can bring back problems.
• Turn off autoboot and background activity for unnecessary apps right away (see Section 2).

⚠️ Attention: Redmi 9s MIUI 12.5+ You may need to re-assign your Xiaomi account after reset. If you forget your password, check it beforehand at account.xiaomi.com.

FAQ: Frequent questions about Redmi 9 performance