Your Xiaomi Redmi Note 8 Pro suddenly started to slow down, apps are opening late and animations are twitching? This is a common problem that even powerful smartphone owners face after 1-2 years of use. The reasons can be due to software failures and hardware limitations. In this article, we will discuss all possible solutions from basic to advanced, including hidden MIUI settings that will help to return the device to its previous speed.
The Redmi Note 8 Pro features a Mediatek Helio G90T processor and 6-8GB of RAM, which should theoretically be smooth, but over time, the system gets clogged with garbage, background processes eat up resources, and MIUI updates are not always optimized. We analyzed user feedback and technical data to create the most effective algorithm for actions. Start with simple steps — perhaps a deep reset is not necessary.
1.Diagnostics problem: why the brakes Redmi Note 8 Pro
Before you start treatment, you need to make a diagnosis, and brakes can manifest themselves in different ways:
- 🐢 Slow-down application opening (more than 2-3 seconds)
- 🔄 Hanging when scrolling menus or desktops
- 🎮 Lags in games (FPS below 30 at medium settings)
- 🔋 Fast battery discharge + housing heating
- 📱 Spontaneous reboots or departures from applications
The main reasons for the brakes of the Redmi Note 8 Pro:
| Type of problem | Signs. | Probability, % |
|---|---|---|
| A filled memory | Less than 1 GB of free space, "Memory is full" notification | 60% |
| Overloaded background processes | The phone warms without load, the battery goes down in 4-5 hours | 50% |
| Outdated firmware | Long time without updates (more than 6 months) | 40% |
| Misfunction of MIUI | Interface glitches, broken gestures, system application errors | 30% |
| Hardware problems | Lags after falling/getting moisture, artifacts on the screen | 10% |
For accurate diagnosis, use the built-in tools:
- Go to Settings → About Phone → MIUI version and press 5 times on “Kerole” to enable the developer mode.
- Return to Settings → Additional → For developers and include Process Statistics.
- Check the CPU and RAM boot in real time – if the free memory is less than 500 MB, the problem is in the background processes.
2. Cleaning the system: remove garbage and cache
To start with, the simplest and most effective method is that app cache and system debris are the main cause of brakes 70 percent of the time. The Redmi Note 8 Pro has two levels of cleaning:
Level 1: Quick cleaning with Security App
- 🧹 Open the Security app (Shield icon)
- 🔍 Select Cleaning → Deep Cleaning
- 🗑️ Delete unnecessary files (especially note "Residual Files" and "Large Files")
- 🔄 Reboot the phone.
Level 2: Manually cleansing the cache of problematic applications
- Go to Settings → Applications → Application Management
- Sort by cache size (click on three dots in the upper right corner)
- Select apps with a cache >100MB (usually Facebook, Instagram, YouTube, MIUI Gallery)
- Click Clear Cache and Clear Data (Warning: This Will Reset the App Settings!)
☑️ Checklist for cleaning the system
Critical information: Redmi Note 8 Pro is especially often clogged cache system application com.miui.gallery (Gallery), its cleaning can free up to 1-2 GB of space and significantly speed up the interface.
⚠️ Warning: Do not clear the data of the Google Play Services and MIUI System applications, which may cause system failures and loss of communication with Google servers.
3. MIUI Optimization: Hidden Settings for Acceleration
MIUI has a lot of hidden features that can be used to optimize performance.Many of them are disabled by default to save battery power, but activating them can greatly improve smoothness.
Animation settings (requires developer mode):
- Activate Developer Mode (as described in the first section)
- Go to Settings → Additional → For Developers
- Find the parameters: Window animation scale → set 0.5x or Off. Transition animation scale → 0.5x Animator duration → Off.
Optimization of background processes:
- 🔄 In the same developer menu, find the Process Limit and set the Standard Limit (if it is "Not Background").
- 🚫 Disable Transition Animation and Background Check for Save Resources
- 🔋 Enable Optimization MIUI (if available in your version)
Disabling unnecessary system applications:
adb shell pm disable-user --user 0 com.miui.analytics
adb shell pm disable-user --user 0 com.xiaomi.ab
adb shell pm disable-user --user 0 com.miui.cloudservice
adb shell pm disable-user --user 0 com.miui.cloudbackupThese commands will disable analytics collection, advertising services and Xiaomi cloud backup, requiring ADB and enabled USB debugging.
How to enable debugging on USB?
4. Firmware Update: When and How to Do It Right
Outdated firmware is one of the main reasons for the brakes. Xiaomi regularly releases updates that optimize the work of the Mediatek Helio G90T and fix MIUI errors. However, not all updates are equally useful - some users note that after upgrading to MIUI 13/14 performance drops.
How to properly update:
- 🔍 Check the current version in Settings → About Phone → Version MIUI
- 📥 Update only through Settings → System Update (don’t use third-party firmware without experience!)
- 🔋 Battery charge must be >50% before upgrade
- 📶 Connect to stable Wi-Fi (airborne update weighs 1.5-2.5 GB)
What to do if after the update appeared lags:
- Wait 24 hours – the system can index files after the update
- Cache reset via Recovery: Turn off phone Press Power + Volume up before logo appears Select Wipe Cache (use volume buttons for navigation) Reboot via Reboot
rollback
Fastboot
⚠️ Warning: Updating via Fastboot or third-party firmware (Custom ROM) could result in bootloader locking. On the Redmi Note 8 Pro, Xiaomi has tightened its unlock policy since 2023 - now requires a wait of 168 hours (7 days) after an account is tied.
💡
Before updating, back up via Settings → Additional → Backup and Reset. Select Local Backup and save data to the SD- card or PC. This will help restore contacts and messages if something goes wrong.
5. Radical measures: reset to factory settings
If all previous methods have failed, it's time to consider hard reset.This is an extreme measure, but it's guaranteed to return the phone to its original speed. There are two ways to reset on the Redmi Note 8 Pro:
Method 1: Through the settings menu (soft reset)
- Go to Settings → Additional → Backup and Reset
- Select Settings Reset.
- Clear all data (including internal memory if necessary)
- Confirm the action and wait for the reboot (it will take 5-10 minutes)
💡
Factory reset deletes all data, including photos, messages and installed applications. If you didn't have a backup, it won't be possible to restore the information. Always save important data to an external drive or cloud before resetting.
Hardware problems: when the "iron" is to blame
If the software methods didn't help, the problem may be the hardware.The Redmi Note 8 Pro has several "diseases" that lead to brakes:
| Problem. | Symptoms | Decision |
|---|---|---|
| Battery wear and tear | Fast discharge, spontaneous shutdowns at 20-30% charge, overheating | Battery replacement (original costs ~1500-2000₽) |
| Processor overheating | Phone heats >45°C without load, throttling (reduced frequency) | Dust cleaning, heat paste replacement (in the service center) |
| Memory problems (eMMC) | Floating when reading/write files, errors "Memory damaged" | Check with the Smart Tool in the Engineering Menu (#4636##) |
| Maternity board malfunction | Artifacts on the screen, spontaneous reboots, broken modules (Wi-Fi, Bluetooth) | Diagnostics at the service center (repair ~3000-8000₽) |
How to check the status of the battery:
- Install AccuBattery from Google Play
- Charge the phone to 100% and discharge to 0% (calibration)
- Check battery health: 🟢 90-100% - normal 🟡 80-89% - average wear (can cause brakes) 🔴 <80% - critical condition (replacement required)
Processor performance check:
- Install Throttling Test CPU from Google Play
- Run the test for 10-15 minutes.
- If the processor frequency falls below 1.5 GHz during loading, this is a sign of thermal throttling (overheat protection works).
⚠️ Warning: If the phone continues to brake after the battery is replaced, check the contacts of the battery plume. On the Redmi Note 8 Pro, there is often a problem with the oxidation of the contacts, which leads to unstable power supply and CPU failures.
7.Alternative firmware: whether to switch to Custom ROM
If standard methods don't help, some users are considering installing custom firmware.This could give the Redmi Note 8 Pro a second life, but has its own risks.
The advantages of custom firmware:
- ⚡ Higher performance (no unnecessary Xiaomi services)
- 🆕 Current versions of Android (e.g. LineageOS 20 based on Android 13)
- 🔧 Flexible interface and performance settings
- 📱 No Advertising in System Applications
Cons and risks:
- 🚫 Loss of warranty (if still valid)
- 🔐 Possible problems with Widevine L1 (Netflix, Disney+ will work in low resolution)
- 🔋 Increased battery consumption on some firmware
- 📡 Problems with the NFC module or camera (not all custom firmware fully supports iron)
Recommended firmware for Redmi Note 8 Pro:
| Firmware | Android version | Features | Reference |
|---|---|---|---|
| LineageOS | 13 | Stable, close to stock Android | XDA Developers |
| Pixel Experience | 13 | Google Pixel interface, good optimization | Official website |
| Havoc OS | 12 | Maximum customization, but less stable | Havoc OS |
Step-by-step installation instructions:
1. Unlock the bootloader through the official Xiaomi website (miui.com/unlock)
2. Install TWRP Recovery:
fastboot flash recovery twrp.img
fastboot boot twrp.img
3. Make a backup of the current firmware in TWRP
4.Sweeten custom firmware and GApps (if you need Google services)
5. Clean Dalvik/ART Cache and reboot