Xiaomi phone brakes and lags - what to do in 2026? step-by-step guide

Xiaomi's smartphone is slowing down, apps are taking a long time to open, and animation is twitching? This is a common problem even on relatively new devices - from budget Redmis 10A before the flagship Xiaomi 13 Ultra. Causes can be hidden as in software failures MIUI, In this article, we will discuss all possible solutions, from basic to radical, taking into account the features of Xiaomi firmware and the architecture of the processors. Qualcomm/Snapdragon and Mediatek.

It's important to understand that brakes don't always mean that the phone is "outdated," and often it's the background, the overloaded cache, or the incorrect power saving settings that we tested on each method on devices with a high-speed, low-powered cell. MIUI 14 and HyperOS – new guidelines are relevant for 2026.

If your Xiaomi has become slower since the update, that’s a separate story, so check the firmware section that describes specific bugs of the latest software.

1.Diagnostics: Why is Xiaomi slowing down?

Before you start "treatment", you need to identify the root of the problem. Brakes on Xiaomi are divided into 3 categories:

🔹 Programming - related to MIUI, Apps or viruses, manifested as interface freezes, slow menu opening, scroll lags.

🔹 Hardware – battery wear, processor overheating or memory malfunction, more common on devices older than 3 years (for example, Redmi Note 8 Pro or Mi). 9T).

🔹 Mixed – when the software is not optimized for hardware (typical for custom firmware or after upgrading to weak devices like Redmi) 9A).

Quick Test: Open Settings → The phone. → Version. MIUI And you tap 5 times on the "Core." If you see a Debugging menu, select GPU Rendering - if FPS Below 40, the problem is precisely in the graphics accelerator (often the Adreno driver on the Snapdragon is to blame).

After updating MIUI|After installation of the application|All the time, for no reason.|Only in games/applications|Another option-->

System cleanup: cache, debris and background processes

So let's start with the simplest one: cleaning up digital junk. MIUI Cache accumulates more aggressively than in “pure” Android, due to the shell and preinstalled services Xiaomi (mipush, miui.analytics, etc.).

📌 How to Clean Cache Correctly:

• 🧹 App cache: Settings → Annexes → Select an application → Warehouse → Clear the cache. Use Settings for mass cleaning. → Warehouse → Cleaning (you can also remove unnecessary ones) APK-file).
• 🗑️ System garbage: Built-in Security application) → Cleanup → Deep cleaning, delete temporary files, thumbnails and uninstalled software remnants.
• 🔄 Background processes: Settings → Battery → Power saving mode. Turn off background restriction for critical applications (messengers, music).

⚠️ Warning: Do not clear the cache of system applications (com.android.systemui, com.miui.home) - this can cause the launcher to fail. If after cleaning artifacts appear (for example, a black screen when unlocked), restart the phone.

Clear the cache of all applications|Remove unused items APK|Disable the autoload of unnecessary applications|Check the storage for duplicate photos / videos|Reset the device-->

Critical information for Xiaomi owners on Snapdragon 8 Gen 1/2: If after cleaning the cache, the games begin to lay more, turn on the option "Use" in the graphics settings. 120 Hz in Games" (available in Settings → Display. → Update frequency.This is due to an Adreno driver bug 730/740.

3. Optimization MIUI: slack-ups

MIUI — It's a powerful shell, but it's a bit of a drag, and that's what you can turn off without losing functionality:

🔧 List of unnecessary features (sorted by performance impact):

• 🎨 Animations and transitions: Settings → The phone. → Version. MIUI (Tap 7 times to turn on Developer Mode. Then: Settings → Additionally. → For developers and install all animations on 0.5x or disable (Disable window animation, Disable transition animation).
• 📡 Background activity MIUI: In the same developer menu, turn off background restriction and optimization MIUI (This will reduce the system's aggressiveness in killing processes).
• 🔍 Application search: Settings → Main screen screen → Turn off App Search (saves up to 15% CPU scroll).
• 📊 Usage statistics: Settings → Battery → Battery usage statistics → shut down data collection.

🛠 For advanced users:

If your Xiaomi is on Snapdragon 888/8 Gen 1 (Like Mi. 11 or Redmi K50), Try to disable the large cores CPU It's manual. It'll reduce game performance, but it'll increase battery life and it'll reduce interface lags:

1. Enable Developer Mode (as described above).
2. Go to Settings. → Additionally. → For developers → Configuration CPU.
3. Mark the cores. Cortex-X1/X2 And set them Max frequency. → 1.8 GHz.

4.Battery and overheating: The hidden enemies of performance

A worn-out battery or overheating of the processor causes Xiaomi to artificially trott (lower) performance. Here's how to check and fix it:

🔋 Checking battery status:

Install the AccuBattery app (available on Google Play) and check the battery health setting. If it's below 80%, the battery needs to be replaced - the worn-out battery not only discharges quickly, but also causes micro-hangs due to power surges.

🌡️ Diagnosis of overheating:

• 🔥 Use it. CPU Monitor AIDA64, Normally for Snapdragon: up to 45.°C in plain, up to 70.°C under load. Exceeding these values indicates thermal trottling.
• 🧊 Clean the radiator and thermopaste (relevant to the POCO F3, Redmi K40 If you haven't taken your phone down, contact the service.
• ☀️ Avoid direct sunlight and do not use your phone while charging (especially fast, at 30).+ Watt).

⚠️ Note: If your Xiaomi suddenly turns off when heated to 60°C, it may be a firmware bug (relevant to the MIUI 13/14 Snapdragon on Snapdragon 870/888). Update or roll back to a stable version via Fastboot.

5. Updating firmware: when it helps and when it hurts

Updates MIUI They can both fix the brakes and make them worse. 11T Pro after updating to MIUI 14 got problems with the smoothness of the interface due to new animations, and the Redmi Note 10 Pro became slower due to more stringent background restrictions.

🔄 How to properly update:

• 📲 Check the firmware version: Settings → The phone. → Version. MIUI. If you have a stable version and Beta is available, don’t upgrade, it’s test software.
• 🔍 Check out the reviews: Before updating, look in 4PDA or XDA Developers complain about your model, POCO X3 Pro after MIUI 13.0.8 got a bug with the camera hanging.
• 🛑 Recoil if brakes appear after the update: Use the Fastboot or Mi Flash Tool for the downgrade.Instruction below.

📌 Spoiler for owners of old Xiaomi:

If your phone is released before 2020 (such as the Redmi Note 7 or Mi) A2), Official updates could impair performance due to new requirements MIUI In this case, you'd better go to custom firmware like Pixel Experience or LineageOS.

💡

Before updating, make a backup through Settings → Additionally. → Backup. If the phone freezes on the logo after the update, you can recover the data via Mi. PC Suite.

Radical measures: resetting, custom firmware and iron replacement

If nothing has worked, it's time to consider extreme methods, which take time and sometimes risk, but often save even "dead" phones.

🔥 Reset to factory settings:

It'll delete all the data, but it'll clean up the system.

1. Save important data (photos, contacts) to Google Drive or computer.
2. Go to Settings → About the phone → Reset settings.
3. Choose Delete all data and confirm.
4. After reset, do not restore data from the backup MIUI — It'll bring back old problems. Install applications manually.

🛠 Installation of custom firmware:

Relevant for devices older than 3 years. Popular options:

• Pixel Experience – pure Android without bells and whistles MIUI.
• LineageOS is stable and fast, but without Xiaomi’s signature chips.
• Xiaomi.eu – modified MIUI softwareless.

⚠️ Note: Installing custom software will reset the warranty and may cause the phone to break down. Use only verified instructions with XDA Developers or 4PDA.

🔧 Replacement of hardware components:

If the phone is slowing down due to physical wear, only repairs will help:

• 🔋 Battery - replacement with a new (original or qualitative analogue from the ATL Samsung SDI).
• 🖥️ Storage (eMMC/UFS) — If the phone says "Memory is damaged," it requires a chip replacement (expensive, but sometimes cheaper than a new phone).
• ❄️ Thermopaste – on devices with Snapdragon 855/865 (Like Mi. 9, K20 Pro) paste drying causes trolling.

💡

Resetting helps in 70% of software brakes, and if you have lags left behind, the problem is hardware or firmware.

7. Firmware rollback: how to bring back the old version MIUI

If the brakes appeared after the update, you can go back to the previous version. MIUI. This works even on a locked bootloader (but you will need to unlock it).

🔄 Step-by-step instruction:

1. Download the desired firmware version from the official Xiaomi website (choose Stable for your model).
2. Unpack. ZIP-file-box.
3. Install the Mi Flash Tool and Xiaomi drivers.
4. Turn off the phone and press Volume Down + Power to log into the Fastboot.
5. Connect your phone to your PC and in the Mi Flash Tool, select the downloaded firmware.
6. Press Flash and wait until it is completed (don’t turn off USB!).

⚠️ It's important:

• Recoil is possible only within one branch of Android (for example, with the MIUI 14 on Android 13 can not roll back on MIUI 13 on Android 12).
• After rollback, make Wipe Data in Recovery, otherwise crashes are possible.

📌 For devices with a locked boot loader (Redmi Note 11, POCO X4 Pro and later, you first need to unlock Bootloader through Mi Unlock Tool. This will take 7-15 days (due to Xiaomi policy).

8. Alternative solutions: if nothing has worked

When all methods have been tried, and the phone still slows down, there are non-standard approaches:

💡 Unobvious Ways to Speed Up Xiaomi:

• 🎮 Game mode for everyday tasks: Enable Settings → Special facilities → Play mode and add frequently used apps (like Chrome or Telegram) to it, which will give them more resources.
• 🔗 Disable Dual Apps: Application cloning function (Settings) → Annexes → Dual Apps can consume up to 30% of RAM.
• 📶 Switch to 4G: If you don't use 5G, Turn it off in Settings → SIM-maps and mobile networks → The preferred type of network, which will reduce the load on the modem.
• 🔊 Disabling system sounds: Vibration and sounds when pressed (Settings) → Sound and vibrations create delays in the interface.

🔄 If you are planning to buy a new phone:

When choosing a replacement, pay attention to:

• Type of memory: UFS 3.1 faster UFS 2.2 by 40-50% (relevant to Redmi Note 12 Pro)+ vs Redmi Note 11 Pro+).
• Processor: Snapdragon 7+ Gen 2 overtakes Dimensity 1080 in real-world tasks despite lower frequency.
• Updates: Xiaomi promises 3 years of updates for flagships and 2 years for budget.

💡

Before selling old Xiaomi, make Wipe All Data in Recovery (clip Volume Up). + Power when your phone is off! This will completely delete your data, including your accounts.

FAQ: Frequent questions about brakes on Xiaomi