How to Make Your Xiaomi Phone Not Lack: A Complete Guide to Acceleration

Your Xiaomi is getting dumb, apps are late and animations are twitching? Lags are one of the most common problems on the brand’s smartphones, but in 90% of cases they can be fixed without going to the service. The causes of brakes range from clogged memory to firmware errors, and the solutions depend on the model (Redmi Note 12, POCO X5, Mi 11) and the version of MIUI. In this guide, we will examine system and hardware optimization methods – from basic to advanced, including hidden developer settings and alternative firmware.

It’s important to understand that lags aren’t always hardware-related. Even Xiaomi’s flagship models on the Snapdragon 8 Gen 2 can slow down due to incorrect power saving settings or background conflict. We’ve tested all of these on devices with MIUI 14 and HyperOS — the results are in the performance table below. If after reading the article the problem remains, check the phone for viruses or physical damage to the board (especially after falls or moisture).

1.Diagnostics: Why did Xiaomi start laying?

Before you start optimizing, identify the root of the problem. Lags on Xiaomi are divided into three categories:

• 🔄 Software: overloaded OS, firmware errors, viruses.
• 📱 Hardware: worn-out battery, processor overheating, damaged memory.
• 🔋 Mixed: aggressive energy saving, incompatible applications.

To identify the cause:

1. Open Settings → About Phone → MIUI version and check the firmware’s relevance. Outdated versions (below MIUI 13) often contain bugs.
2. Start Settings → Battery → Battery Use and see which apps consume >10% charge in the background.
3. Set the CPU-Z and check the temperature of the processor under load. Values above 65°C indicate overheating.

If the phone is only lagging in games (such as Genshin Impact or PUBG Mobile), the problem is more likely to be graphical settings or overheating. Use Game Turbo mode (includes in Settings → Special Features → Game Mode) for diagnostics.

2. Cleaning the system: remove garbage and cache

The first step is to make room for memory. Xiaomi is known for accumulating gigabytes of unnecessary files over time, especially if MIUI themes or duplicate photos are actively used in a gallery.

• 🧹 Cleaning the app cache: Go to Settings → Annexes → App management, select the “heaviest” app (like Facebook or TikTok) and click Clear Cache.
• 🗑️ Remove unnecessary files: Use the built-in Cleanup app (broom icon) → Deep Cleanup. Pay attention to the Large Files and Duplicates sections.
• 📁 Transfer of data to SD-If you have a microSD-enabled model (like the Redmi Note 10 Pro), transfer your photos and videos to Settings → Warehouse → Data portability.

For advanced users: Remove system debris via ADB. Connect your phone to your PC, enable USB Debugging (Settings → About Phone → MIUI Version → 7 times click on version) and execute the command:

adb shell pm trim-caches -d 1000

This command clears the cache of all applications, including system ones. Do not use it more than 1 time per month - this can disrupt some MIUI services.

3. MIUI Optimization: Hidden Settings for Acceleration

MIUI has a lot of hidden features that can both speed up and slow down the phone, such as the default switch animation that eats up to 15% of CPU resources on weak models (Redmi 9A, POCO M3).

1. Activate Developer Mode (as mentioned above).
2. Go to Settings → Additional → For developers.
3. Find the items: Scale of window animation → No animation Scale of transition animation → No animation Duration animation → Off.

Another "heavy" function — MIUI Optimization (optimization) MIUI). It's designed to be accelerated, but in practice it often causes lags because of conflicts with the background processes:

adb shell settings put global miui_optimization_disabled 1

Once you've done this, restart your phone. The effect is noticeable on models with 4GB of RAM and below. On flagships (Xiaomi 13 Ultra), the difference is minimal.

⚠️ Attention: Disconnection MIUI Optimization can disrupt navigation gestures and design themes. If interface artifacts appear after the reboot, return the setting with the adb shell settings command put global. miui_optimization_disabled 0.

4. Background and autoboot management

One of the main reasons for the lags is apps that start when you start and run in the background, like Facebook or AliExpress, can consume up to 300MB of RAM even when you don't open them, to limit them:

• 🚫 Turn off autoboot: Settings → Annexes → Application management → Autorun. Disable everything except system applications (e.g. Phone or Messages).
• ⏸️ Limit background activity: In the same application management menu, select Background Limitation and set Strict limits for unnecessary programs.
• 🔄 Use the "Green Mode": In Settings → Battery → Battery mode select Charge Savings – this will reduce background activity.

For models with 6GB of RAM and higher (POCO F4, Redmi K50), it is useful to enable Advanced Memory (Settings → Additional → Expansion of Memory).This feature uses some of the internal memory as virtual RAM, adding up to 3GB to existing ones. However, on weak phones (Redmi 8), this can worsen performance due to slow flash memory.

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If notifications from messengers have stopped coming after limiting background processes, add them to the exceptions in the Settings section → Applications → Special Access → Auto Run.

5. Update firmware and transition to HyperOS

Outdated firmware is a common cause of lags, especially on phones older than 2 years. Xiaomi regularly releases patches for MIUI and the new HyperOS that fix performance errors.

1. Go to Settings → About the phone → System update.
2. If you have an update, download it over Wi-Fi (not mobile!).
3. Before installation, make a backup to Settings → Additional → Backup and Reset.

For 2021 and newer models (Redmi Note 10, POCO F3), the recommended switch to HyperOS, Xiaomi’s new performance-optimized shell, consumes 20-30% less RAM compared to MIUI 14.

• 📥 Download the firmware from the official Xiaomi website (select model and region).
• 📁 Transfer the.zip file to the folder downloaded_rom phone-on.
• 🔄 Go to Settings. → The phone. → Updating the system → Three dots (menu) → Select a firmware file.

⚠️ Warning: Do not install firmware for other regions (e.g. Chinese on a global phone) and this will lead to broken Google services and problems with the Internet. 5G/LTE.

6.Reset to factory settings: Last chance

If none of these methods work, you'll have to reset hard, and that'll delete all the data from your phone, so first you have to:

1. Save photos and videos on PC or in the cloud (Google Photos, Mi Cloud).
2. Export contacts to Settings → Contacts → Import/Export.
3. Write down logins/passwords from accounts (especially from Mi Account, as after the reset, you will need authorization).

For discharge:

1. Go to Settings → Additional → Backup and Reset → Reset settings.
2. Choose to erase all data and confirm the action.
3. After the reboot, set your phone up as new (don’t restore backup – it could bring back lags!).

If the phone doesn’t respond to touch or is stuck on the Xiaomi logo, reset via Recovery Mode:

1. Turn off the phone.
2. Press Power + Volume up until the logo appears.
3. Select Wipe Data → Wipe All Data (manage volume buttons, confirmation – power button).

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Factory reset eliminates 95% of software lags, but does not help with hardware problems (wear-out battery, damaged memory).

7. Hardware problems: when to carry in the service

If the phone is lagging even after resetting, the problem may be iron.

• 🔋 The battery is discharged for 2-3 for an hour and the phone is off 30-40% — Replace it (cost for Redmi Note) 1500 ₽).
• 🌡️ Overheating even for simple tasks (for example, WhatsApp) – thermopaste wear or damage to the processor is possible.
• 💾 Memory Reading Errors: Applications suddenly close, files corrupted - a sign of a flash drive malfunction.

To diagnose hardware problems:

1. Check the battery status in Settings → Battery → Battery status. If capacity is < 80%, a replacement is required.
2. Run the memory test via Mi Diagnostics (hidden menu): dial ##4636## in the dialer and select Testing.
3. If the phone fell or got wet, inspect the charging connector for corrosion - oxidation of the contacts can cause lags when connected to the network.

For models of 2020 and older (Redmi Note 8 Pro, POCO X2) characteristic EMMC-If the phone slows down when writing files (for example, when shooting a video), this is a sign of memory wear, in which case only replacing the chip in the service (cost is from 3000) will help. ₽).

FAQ: Frequent questions about lags on Xiaomi