How to speed up Xiaomi Redmi 9T: From simple customization to deep optimization

Xiaomi Redmi 9T — One of the most popular budget smartphones, but over time, even it begins to slow down: apps open for a long time, animations twitch, and the battery goes down in half a day. In this article, we will analyze all possible ways of acceleration - from the basic settings MIUI And we've done it before radical things like factory resets or firmware changes, and it's important that not all methods are equally effective, so we've put them from the simplest to the most complex.

First, let’s find out what’s stopping your Redmi. 9T. If the lags appear when you open specific apps (like Instagram or TikTok), the problem is more software, if the phone is slow out of the box, it may be the firmware or hardware limitations, we'll take both scenarios into account and give recommendations for each.

1. Performance Diagnosis: What exactly is inhibiting?

Before optimizing Redmi 9T, You need to know where the bottleneck is. 90 percent of the time, the brakes are connected to the bottleneck:

• 📱 Lack of RAM (4 GB in Redmi) 9T quickly clogged with background processes).
• 🗑️ A filled drive (the system starts to lag when the memory is filled at 85%+).
• 🔄 Outdated firmware (especially relevant for devices on the MIUI 12 and below).
• 🧹 Garbage in cache (temporary application files can take up gigabytes).

To check the loading of RAM and memory:

1. Open Settings → About the phone → System status.
2. See the graphs of RAM and memory usage.
3. If the RAM is loaded to 90%+ In simple, you have a problem in the background. If you're 95 percent packed, you have to clean your files.

Also note the temperature of the processor. overheating (above 50)°C) causes trottling, which is a forced performance loss. You can check the temperature through the app. CPU Monitor (available on Google Play) If your phone is warming up even in plain, it might be time to clean the dust or change the heat paste (we’ll talk about this in the section on hardware methods).

2. Cleaning up memory and cache: quick ways to free up space

The most common cause of brakes is clogged memory.Redmi 9T supplied 64 or 128 GB drive, but even that's not long enough if you don't keep track of the files. 10-15% Here's how to make room for it:

2.1 Delete unnecessary files manually

• 📂 Downloads: Open Files → Download and remove old ones APK, photos from messengers, documents.
• 🎵 Music and Video: Check Music and Movies folders – there may be gigabytes of forgotten files.
• 📷 Use Google Photos or Gallery Doctor to find repetitive photos.

Clearing the application cache

Cash speeds up the software, but it grows to an unreasonable size over time to clean it up.

1. Go to Settings → Applications → Application Management.
2. Choose the “heavy” app (like Facebook or YouTube).
3. Press Warehouse. → Clear the cache.

For automatic cleaning, install SD Maid or Files by Google, which will find junk files, remnants of deleted programs, and suggest that you delete them. Importantly, don't clean the cache of system applications (e.g. com.miui.home) - this can cause malfunctions. MIUI.

2.3. Transfer of data to memory card

Redmi 9T It supports microSD up to 512 GB:

• 📸 Photo and video (via Gallery) → Albums. → Select → Move over).
• 🎮 Game data (in the game settings, select "Move to" SD»).
• 📄 Documents and archives.

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If your phone doesn’t see your memory card, format it into FAT32 Or exFAT through a computer. 9T no support NTFS!

3. MIUI Optimization: Disabling Unnecessary Functions

MIUI — It's one of the heaviest shells of Android, and it consumes a lot of resources because of the background, the animations, the built-in services:

3.1. Disabling animations

Animations make the interface look more beautiful, but they slow down.

1. Activate Developer Mode: Settings → About Phone → MIUI version (click 7 times).
2. Back to Settings → Additionally. → For developers.
3. Find the items: Window Animation Scale → Off. Size of Transition Animation → Off. Duration of the Animator → Off.

Limitation of background processes

MIUI He likes to keep apps in the background, even when they're not needed:

1. Go to Settings → Battery and Performance → Battery Management.
2. Select Settings → Limitation of background activity.
3. Tag apps that shouldn’t work in the background (like AliExpress or VKontakte).

3.3 Disconnecting unnecessary services MIUI

V MIUI There are a lot of built-in features that are rarely used, but consume resources:

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Disabling animations and background processes gives an increase in productivity to 20-30% on weak devices like Redmi 9T.

Resetting settings MIUI default-bound

If the interface is lagging even after optimization, try resetting the settings. MIUI (data-free):

1. Go to Settings → System → Resetting settings.
2. Choose Reset settings (not to be confused with Reset to factory!).
3. Confirm the action.

This will return to standard values of wallpaper, sounds, screen settings, etc., but will not affect applications and files.

4. Firmware Update: Why is it important?

Outdated firmware is one of the main causes of brakes. Xiaomi regularly releases updates that optimize the processor, fix bugs and improve memory management.

1. Open Settings → About the phone → System update.
2. If you have an update, download it and install it.
3. After the update, reboot.

If the automatic update does not find new versions, try installing the firmware manually:

1. Download the latest stable firmware for Redmi 9T (codename lime) from Xiaomi’s official website.
2. Move the file to the root of the phone’s memory.
3. Press Volume Up + Power to enter Recovery.
4. Select Install update.zip and confirm the installation.

How to reset:

1. Make a backup copy of important data (photos, contacts, messages).
2. Go to Settings → System → Resetting → Delete all data.
3. Confirm the action and wait for the reboot.

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After the reset, don't restore data from the backup right away - check the performance of the clean phone first. If it's running fast, the software was the problem.

Installation of custom firmware (for advanced)

If the stock MIUI slows down even after resetting, try alternative firmware, for example:

• 🔧 LineageOS – “naked” Android without unnecessary bells and whistles.
• ⚡ Pixel Experience – firmware with Google Pixel interface.
• 📱 Havoc-OS - customizable firmware with many settings.

The installation will require:

1. Unlock Bootloader (via the official Xiaomi tool).
2. Install custom Recovery (e.g. TWRP).
3. Swipe the selected firmware and GApps (Google services).

5.3 Retracement to an older version MIUI

Sometimes new versions MIUI If you've got a phone that's slowing down after you upgrade, you can roll back:

1. Download the old firmware (for example, MIUI 12.5 instead of MIUI 14) from Xiaomi Firmware Updater.
2. Fastboot or Recovery.

6. Hardware methods: when the "iron" is to blame

If software methods didn't help, the problem could be the hardware.Redmi 9T It is not the most powerful phone (Snapdragon 662) and its components wear out over time.

Dust cleaning and heat paste replacement

Overheating causes trottling, which is a forced performance loss, and if the phone is warming up even in a simple way,

• 🔧 Disassemble the body (or take to the service).
• 🧹 Clean the radiator and vents from dust.
• 🧴 Replace the heatpaste on the processor (use Arctic) MX-4 analogue).

Replacement of the battery

A worn-out battery not only goes down quickly, it also limits performance. 2-3 the hour or the phone is turned off when 30% It's time to change the charge. 9T battery LB43 capacity 6000 mic.

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Check battery wear through the AccuBattery app. If the battery is below 70% healthy, it's best to replace it.

Increased RAM (virtual RAM)

V MIUI 12.5+ There's a function for expanding RAM through internal memory:

1. Go to Settings → About the phone → Memory.
2. Click on RAM Extension.
3. Select volume (recommended 2-3 GB).

It won’t replace physical memory, but it will help with multitasking.

7.Optimizing for Games: How to Start PUBG 60 FPS?

Redmi 9T It is not a gaming phone, but it can be run on it. PUBG Mobile, Call of Duty or Genshin Impact (at minimum settings). Here's how to make the most of it:

7.1.Graphics settings in games

For PUBG Mobile:

• 🎮 Graphics: Smooth (Smooth).
• 🔄 Feature frequency: Ultra (Ultra) or High (High).
• 🎯 Style: Classic (disables extra effects).
• 🔊 Sound: High (but turn it off) 3D-audio).

7.2 Use of Game Turbo

V MIUI There is a built-in game mode:

1. Open Settings → Special features → Game Turbo
2. Add the game to the list.
3. Activate options: Performance mode. Turn off autobrightness. Block notifications.

Phone cooling

Games heat up the processor a lot.

• 🧊 Use a cooling stand (e.g. Black Shark FunCooler).
• 🌡️ Play in a cool room (air temperature is not higher than 25)°C).
• ⚡ Close all background applications before launching the game.

8.Alternative launchers and lightweight applications

Stock launcher MIUI It consumes a lot of resources. Replace it with lighter ones:

• 🚀 Nova Launcher – fast and customizable.
• ⚡ Lawnchair – Minimalist Launcher with Gesture Support.
• 📱 Hyperion Launcher – Optimized for weak devices.

Also install lightweight versions of popular apps:

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Replacing standard applications with Lite-version can free up to 500 MB RAM and speed up the work on 15-20%.

For the browser, use Brave or Opera Mini – they block ads and save traffic, which reduces the load on the processor.

FAQ: Frequent questions about Redmi 9T acceleration