Where does RAM disappear on Xiaomi and how to return it: a complete guide

Have you noticed that your Xiaomi has become slow, applications spontaneously close, and the task manager shows that there is only 100-200 MB of free RAM left? This is a typical situation for smartphones on MIUI, where even 8-12 GB of RAM can eat up the lion's share of resources. In this article, we will discuss 7 real reasons why RAM is lost on Redmi, POCO, Mi and Black Shark - from hidden processes to hardware constraints.

We will warn you: if you see in the settings, 6 GB RAM is free all over. 500 MB isn't always a problem. Modern versions MIUI 14/15 They aggressively cache data in RAM to speed up the re-launch of applications, but when memory leaks to critical values (less than the previous one). 10% This is a signal of a malfunction, and then we'll show you how to distinguish between normal behavior from real memory leakage.

MIUI and its “invisible” processes: why the system eats RAM

The main reason why Xiaomi’s RAM is “disappearing” is the architecture of the MIUI firmware itself. Unlike the “bare” Android, there are dozens of background services that the user does not even know about.

• 🔍 Security App – constantly scans the system for viruses and optimizes performance, consuming up to 300-500 MB RAM.
• 📊 Analytics – collects data about smartphone usage for Xiaomi (you can disable in privacy settings).
• 🎮 Game Turbo – even if you’re not playing, this service can stay active, backing up memory “just in case».
• 📱 Second Space – If you’ve ever created a second desktop, it can “hang” in the background, taking up to 1GB of RAM.

To see the full list of “gluttonous” processes, go to Settings → About Phone → MIUI version (stick 7 times to activate developer mode), then open Settings → Additional → Developer → Memory. Here you will see the real RAM distribution by category: system, applications, cache and free memory.

⚠️ Warning: If you see in the developer memory section that the System is more than 40 percent of the total RAM, that's not normal. MIUI Optimization: The solution is to reset the settings of this service through ADB (guideline).

2.Invisible apps: how they steal memory

Even if you close all apps with the Clear button, many of them continue to work in the background.

• 📱 Social networks (Facebook, Instagram, TikTok) – keep in RAM cache stories, chats and analytics.
• 🎵 Music services (Spotify, Yandex Music, Mi Music) – preload tracks for offline playback.
• 📍 Maps and navigators (Google Maps, Yandex Maps, Mi Maps) - store in memory downloaded sections of maps.
• 💰 Banking apps – many of them block memory downloads for security reasons.

To find these invisibles, open Settings → Applications → Application Management → Memory. Here sort the list by the amount of RAM you use. If an application takes >200 MB and you don't use it, it needs to be either restricted or removed.

adb shell settings put global force_stop_background 1

After that, the system will aggressively close unused applications.-->

Memory Leaks in MIUI: How to Detect and Fix Them

Memory leakage is when an application or service reserves RAM but does not release it after it is done.

• Free memory is gradually reduced even without active action.
• After restarting, the RAM is released, but after an hour or two again “disappears”.
• Apps start to crash with an Out of Memory error.

Leakages are most commonly caused by:

1. MIUI updates – especially beta versions where memory optimization can be broken.
2. Custom themes – Some of the themes from the Mi Theme Store contain bugs that cause the system to leak.
3. Root rights or Magisk – System modifications often disrupt memory management.

How to check for a leak:

1. Reboot the phone.
2. Open Settings → Memory immediately and write down the value of free RAM.
3. Do not run any applications for 30 minutes.
4. Check your memory again if you have 200 less space+ MB, leak confirmed.

4. Viruses and malware: hidden “eaters” of RAM

Many users overlook that Android viruses often disguise themselves as system processes and can consume gigabytes of RAM.

• 🦠 Cryptocurrency miners – use RAM for calculations (sign: phone warms without load).
• 📱 Spyware – records the screen, keyboard logs, consuming memory for the data buffer.
• 🔗 Advertising bots – open hidden browser windows in the background.

How to check your phone for viruses:

1. Install Malwarebytes or Dr.Web Light from Google Play.
2. Start a deep scan (not fast!).
3. Note the processes with names like com.android.system.update, service.host are typical masks for viruses.

⚠️ Note: If you have installed applications from third-party sources (APK), If you don't get it from Google Play, you're 5 times more likely to get it, and if you're hacked, you're going to get it from a modified firmware, and you're going to get it from a completely reset or reflashed version of the Fastboot.

5. Hardware problems: when the "iron" is to blame

If all the software methods didn't work, the problem could be the hardware of the smartphone, and here are the most common cases.

You can check the hardware status using applications like AIDA64 or CPU Throttling Test. If the tests reveal memory test failures, this is a direct signal to carry the phone to the service.

Check the CPU temperature in AIDA64| Run the memory test in MemTest86| View the error logs via adb logcat| Test the smartphone on another firmware (e.g. LineageOS)

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6. How to Free RAM on Xiaomi: 5 Working Ways

If the cause of the memory leak is software, here are 5 proven methods to regain control of RAM:

Method 1: Cleaning up the MIUI cache

The MIUI system cache can take up to 1-2 GB of RAM. To reset it:

1. Go to Settings → Storage → Cleaning.
2. Click Deep Clean and select Cash System.
3. Confirm the action and restart the phone.

Method 2: Disabling unnecessary services

Some system processes can be safely disabled:

• 🚫 Mi Video – if you don’t use a standard player.
• 🚫 Mi Browser – Replace with Chrome or Firefox.
• 🚫 Mi Pay – if you do not use contactless payments.

Disable via Settings → Applications → Application Management → Disable.

Method 3: Set up restrictions for applications

MIUI has a hidden function to limit background activity:

1. Open Settings → Battery and Performance → Battery Management
2. Select the application and set a Background activity limit → Limit.

Method 4: Resetting MIUI Optimization

If the leak is caused by a system optimization error, do:

adb shell cmd package bg-dexopt-job

This command will restart the memory optimization service.

Method 5: Manual Memory Control (for Advanced)

With ADB, you can configure aggressive RAM release:

adb shell settings put global low_ram true


adb shell settings put global min_free_kbytes 524288

This will force the system to clean up memory more actively, but may lead to more frequent reboots of applications.

💡

The most effective way is to combine cache cleaning + disabling unnecessary services + limiting the background activity of applications, which gives a 30-50% increase in free RAM without loss of functionality.

7. When nothing helps: radical measures

If all of the above methods fail, extreme measures remain:

• 🔄 Factory reset - deletes all data, but returns the system to its original state!
• 📱 Fastboot flashing – relevant if the leak is caused by damage to system files.Use the official firmware from Xiaomi website.
• 🛠️ Replacing firmware with custom firmware, like LineageOS or Pixel Experience, doesn't have a heavy add-on. MIUI And save RAM.
• 🔧 Reverse to the old version MIUI — If the leak started after the update, go back to the previous stable build.

⚠️ Note: When you stream through Fastboot or EDL There is a risk of turning your phone into a brick if you interrupt the process or use the wrong firmware. Always check that the firmware file is compatible with your device model (for example, the Redmi Note 12 Pro).+ 5G Redmi Note 12 Pro 5G — It's different models!).

FAQ: Frequent questions about memory on Xiaomi