What is Optimization in Xiaomi Smartphone: A Complete User Guide

Xiaomi smartphones based on the company shell MIUI They're known for their rich functionality, but over time, even the most productive models start to "brake," discharge quickly, or overheat, and optimization is a set of measures to restore factory speed, free up memory, and extend battery life. Unlike radical methods like factory resets, competent optimization allows you to achieve results without losing data.

In this article, we will analyze what exactly is hidden under the term “optimization” in relation to Xiaomi, what tools for this the shell itself provided. MIUI, And what manual settings will help to restore the smartphone to its former friction, and we will pay special attention to hidden functions. MIUI, And the stuff that 90 percent of users don't even know is that it's going to make a huge difference in the experience of the device, and it's relevant for all the models, from the budget Redmi to the flagship Xiaomi 14.

What is Smartphone Optimization and Why You Need It

Smartphone optimization is a set of actions aimed at improving performance, autonomy and stability. In the context of Xiaomi, this includes:

• 🧹 Cleaning cache and unnecessary files that take up space in memory
• ⚡ Adjust the background activity of applications to save charge
• 🔧 Optimization of the processor and RAM
• 🛡️ Protection against overheating and premature wear of the battery
• 📱 Personalization of the interface for specific user tasks

The main problem with modern smartphones is fragmentation of memory and clogging of the system with temporary files. For example, after a year of use on the Xiaomi Redmi Note 12, up to 5-7 GB of garbage can accumulate in memory: application cache, system process logs, residual files after updates. This not only takes up space, but also causes the processor to waste resources on processing unnecessary data.

⚠️ Attention: Optimization does not mean overclocking. Some Internet “advice” (e.g., forced performance mode on an engineering menu) can reduce the life of the processor by 20 to 30 percent.

Another important aspect is energy efficiency. MIUI It's set to balance performance and time, but you can fine-tune those settings to your needs, for example, by turning off the background activity of messengers (except one main one), you can extend autonomy by 15-20% without losing functionality.

Integrated optimization tools in MIUI

Shell MIUI (Since version 12, it includes several built-in optimization utilities that many users ignore:

1. Security – This is where the tools for cleaning memory, managing boot and checking for viruses are concentrated. → Security.
2. Battery optimization – allows you to configure power saving modes and track which applications drain the battery the most. → Battery and productivity → Optimizing the battery.
3. Application Manager - shows which programs are running in the background and how much resources are consumed. → Annexes → Application management.
4. Storage - visualizes the occupied space and suggests clearing the cache. → Warehouse.

The easiest way to start optimizing is to use the Deep Clean feature in the Security section. → Cleaning. It removes:

• 🗑️ Application and system process cache
• 📁 Temporary files and log files
• 📎 Residual data after uninstallation of programs
• 🔍 Files from the basket (if included)

But deep cleaning doesn't solve all the problems, like:

• ❌ Autoload apps (they will continue to run when the phone is turned on)
• ❌ Background processes that consume the battery
• ❌ Settings MIUI, affecting performance (animations, screen resolution, etc.)

💡

After deep cleaning, restart your smartphone – this will help the system recalculate the free space and close unnecessary processes.

Manual optimization: cleaning memory and cache

If the built-in tools don't work, it's time to go to manual methods, and let's start by cleaning the cache, the most common cause of slowdowns.

1. Clearing the cache of individual applications

Some programs (like Facebook, Instagram, or Telegram) can accumulate a few gigabytes of cache to clean it up:

1. Go to Settings → Applications → Application Management.
2. Select the app you want (such as Chrome).
3. Press Warehouse. → Clear the cache.

2. System cache removal (requires developer rights)

System cache (/cache) Stores temporary update and data files MIUI. Cleaning it can speed up the interface:

1. Enable Developer Mode: Go to Settings → About Phone and 7 times click on MIUI Version.


2. Return to Settings → Additional → For developers and enable USB Debugging.




3. Connect the phone to the PC, open the command line and type:




adb shell




su




rm -rf /cache/*




reboot

⚠️ Attention: Do not clean the folder /data — This will result in the loss of all user data, and don't use rm commands. -rf / — It'll completely erase the system.

3. Cleaning Dalvik cache (after updates)

After major updates MIUI You may have lags because of an outdated Dalvik cache to reset it:

1. Go to Settings → Additional → For developers.
2. Find the option to Clear Dalvik cache and confirm the action.
3. The smartphone will reboot and the cache will be reassembled automatically.

Backup of important data|Close all working applications|Connect the phone to charge (if charged) < 30%)|Check the vacant space (needs at least 1 GB)-->

Battery Optimization: How to Prolong Autonomy

The battery is one of the most vulnerable parts of Xiaomi smartphones, and even newer models lose up to 20 percent of their capacity in their first year of use, unless you monitor charging and background activity, and here are the key optimization options:

1. Customization of battery modes

V MIUI There are three preliminary regimes:

• 🔋 Balanced – Optimal for most users.
• ⚡ Performance – maximum speed, but fast discharge.
• 🌙 Energy saving – limits background processes, prolongs autonomy by 30-40%.

To select the mode, go to Settings → Battery and productivity → Battery mode.

Limitation of background activity

Many apps (especially social media and instant messengers) continue to work in the background even when you're not using them.

1. Go to Settings → Battery and Performance → Application Battery Management.
2. Select the application (for example, VK) and set a limit to limit background activity.
3. For critical applications (such as WhatsApp), leave the settings Unlimited.

3. Charging optimization

Xiaomi is offering Smart Charging technology that slows battery wear, to turn it on:

1. Go to Settings → Battery and Performance → Battery Settings
2. Activate Smart Charging 5.0 (available on models with Smart Charging) MIUI 13+).
3. Set a charging limit (e.g. 80%) for overnight charging.

💡

The most effective way to extend the life of a battery is to avoid full discharge (below 10%) and not keep your phone charging for more than 12 hours in a row.

Acceleration of work: customization of the processor and animations

If your Xiaomi is slowing down, it may be not only a clogged memory, but also a wrong processor or graphical interface setting.

1. Disable animations

The animations of the transitions between the screens look beautiful, but slow down the interface.

1. Activate Developer Mode (as described above).
2. Go to Settings → Additional → For developers.
3. Find options: The scale of window animation → Off. Scale of transition animation → Duration of the animator → Off.

2. CPU setup (requires caution!)

The developer menu has options for controlling the processor, but using them incorrectly can lead to overheating.

• 🔄 Limit background processes → Maximum 2 process (savings RAM).
• 📉 Don't stay active → Includes (accelerates switching between applications).
• ❄️ Forced. GPU-acceleration → Off (may cause artifacts).

⚠️ Warning: Do not turn on the option Do not turn off the screen while charging - this leads to overheating and shortens the service life OLED-Also avoid manual overclocking of the processor through the engineering menu (#4636##) if you don't understand the consequences.

3. Optimization of RAM

MIUI It automatically controls RAM, but sometimes you need to manually adjust it:

• 🚫 Close unused applications manually (swipe up the last task menu).
• 🔄 Enable Memory Cleanup When Locked in Settings → Additionally. → For developers.
• 📱 Use the “Lite” version of the application (for example, Facebook Lite instead of the usual Facebook).

Storage optimization: how to free up space

Lack of space is one of the main reasons Xiaomi is slowing down, and it needs at least 10 percent of the space to run smoothly.

1. Removal of duplicates and unnecessary files

Use the built-in Cleanup utility in the Security section. It finds:

• 📸 Duplicate photos (e.g. screenshots with the same content).
• 🎵 Unused audio files (downloads from messengers).
• 📄 Large files (>50 MB) that have not been opened for a long time.

2. Transfer of data to memory card

If your model supports microSD (e.g. Redmi Note 11), transfer to it:

• 📷 Photo and video (via Gallery) → Albums. → Settings → Warehouse).
• 🎮 Games (in Settings) → Annexes → Application management → Transfer to SD).
• 📥 Downloads from the browser (set the default path in Chrome or Mi Browser).

⚠️ Note: Not all applications can be moved to SD-System programs and certain games (e.g, PUBG Mobile will run slower when starting from an external drive.

3. Clean up browser downloads and cache

Download folder and browser cache can take gigabytes to clear.

• For Mi Browser: Settings → Additionally. → Clear the data.
• For Chrome: Settings → Confidentiality → Clear the data.
• For Download folder: Use the Mi File Manager (built-in) MIUI).

Hidden functions MIUI for advanced optimization

MIUI It hides a few useful features that are not obvious at first glance, and they will help you get the most out of your Xiaomi:

1.Ultra Battery Saver Mode (hidden)

In emergency situations (for example, at 5% charge), you can activate the hidden mode of super-saving:

1. Wait until the battery drops below 15%.
2. A notification will pop up asking you to turn on Ultra Battery Saver.
3. This mode only works with calls, SMS and 3 selected applications.

2. Network optimization (for slow internet)

If the mobile internet is slow, try:

• 📶 Switch to Just. LTE (In Settings → SIM-maps and mobile networks → Preferred type of network).
• 🔄 Enable Network Acceleration in Settings → Connections and sharing → Network acceleration.
• 📡 Disable Autoconnection to Open Wi-Fi Networks (They Are Often Overloaded).

3. Configuring virtual memory (RAM Expansion)

In the models with MIUI 13+ Available function of RAM expansion due to internal memory:

1. Go to Settings → Additional → Expand memory.
2. Select the virtual volume RAM (1-3 GB is recommended).
3. Reset the device.

This will help if you have less than 6GB of physical RAM, but does not replace a real upgrade.

💡

Function RAM Expansion is useful for multitasking, but it doesn't speed up games or heavy applications.

When Optimization Doesn't Work: Radical Measures

If all of these methods have failed, maybe the problem goes deeper.

1.Reset to factory settings

This is a radical solution that will bring the smartphone back to its original state.

• 🔄 Make a backup copy through Settings → The phone. → Backup.
• 📱 Remember your Mi Account details (required to unlock after resetting).
• 🔌 Charge your phone to at least 50%.

To perform the discharge:

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. Confirm the action and wait for the reboot.

2. Flashing through Fastboot

If the smartphone became unstable after the update, a clean firmware installation will help:

1. Download the official firmware for your model from the Xiaomi Firmware website.
2. Install the Mi Flash Tool on your PC.
3. Transfer the phone to Fastboot mode (clip Power + Volume down when the device is off).
4. Connect to the PC and the Following instructions of the Mi Flash Tool.

⚠️ Attention: Fastboot flashing erases all data, including files in internal memory, and there is a risk of bricking (turning your phone into a brick) if you choose the wrong firmware.

Replacement of thermopaste (for older models)

If your Xiaomi is constantly overheating and throttling performance (e.g., the Redmi Note 8 Pro after 2-3 years of use), the problem may be with the dried thermal paste.

• Contact the service center for diagnosis.
• If the warranty has expired, you can replace the thermopaste yourself (but this requires disassembling the phone).
• Use a thermal paste with high thermal conductivity (for example, Arctic). MX-4).

FAQ: Frequent questions about Xiaomi optimization