Why RAM on Xiaomi Redmi Note is always busy: analysis and solutions

Introduction: Why does Redmi Note “eat” RAM?

You open the Xiaomi Redmi Note (be it Note 10 Pro, Note 11 or even Note 8 2021), run a couple of applications - and voila: from 6-8 GB of RAM is free only 1-2 GB. At the same time, the phone begins to "brake", the applications are rebooted, and in the task manager hangs a dozen unfamiliar processes. Familiar situation? This is not a defect of the device, but the features of MIUI and Android architecture on Xiaomi smartphones.

In this article, we will discuss 7 key reasons why RAM on the Redmi Note is constantly busy, from aggressive MIUI caching to hidden system processes. And most importantly, give practical solutions to free RAM without compromising performance. Spoiler: disabling Advanced Optimization in the developer settings can return up to 30% of free memory, but more on that later.

1 MIUI and its 'aggressive' caching: why it's not always a bad thing

Xiaomi’s MIUI operating shell is known for its “gluttony” — it actively uses free RAM to caching frequently used applications. It’s not a bug, but a feature: the system preloads data to speed up the opening of programs. For example, if you often check Instagram or Telegram, MIUI keeps them in RAM even after closing.

The problem is that the MIUI caching algorithm is not perfect, it can forget to release memory when it's really needed for new tasks.

• 📱 Applications are not closed completely, but are “freezed” in the background.
• 🔄 The system spends resources on maintaining the cache instead of actual tasks.
• 🐢 Smartphone begins to “pod” with multitasking.

How do you check if the cache is to blame? Open Settings → About Phone → Memory and look at the RAM schedule. If less than 20% of the memory is free after all the applications are closed, the problem is caching.

2. Background processes: Who eats your RAM?

Even when you don’t run apps manually, there are dozens of background processes running on Android, and there are a lot of them on the Xiaomi Redmi Note because:

• 🤖 System services MIUI (e.g. com.miui.analytics for statistics collection).
• 📊 Google Play Services, Android System Intelligence).
• 🔄 Auto Updates (Applications, Weather, Widgets).
• 📱 Applications with push notifications (VK, Facebook, messengers).

To see the full list of “gluttonous” processes:

1. Activate Developer Mode (click 7 times on the MIUI version in Settings → About Phone).
2. Go to Settings → Additional → For developers → Memory.
3. Slip on average memory usage in 3 hours.

A typical picture on the Redmi Note 10 Pro with 8 GB of RAM:

⚠️ Note: Do not manually disable processes through Settings → Apps, if you're not sure what they're supposed to do, can cause your phone to crash, like turning off com.android.phone, and you're not going to be able to get your mobile phone.

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To reduce the load on Google services, disable auto-update apps in the Play Market or use alternative stores like APKMirror.

3. MIUI's 'Optimization': Why it's actually slowing down the phone

MIUI has Advanced Optimization (Settings → Special Options → System Optimization) that promises to speed up the smartphone. In fact, it often does the opposite:

• 🔄 Aggressively compresses RAM for background applications, causing them to reboot when returning.
• 📦 Blocks the cache, which makes programs open longer.
• 🔋 Increases the workload on the processor by trying to “optimize” memory.

How to fix it:

Open Settings → Special Options |Look for System Optimization |Disable Advanced Optimization and Memory Cleanup |Reboot your phone

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After disabling these functions, you will notice:

• ✅ Applications are stored in memory longer (not rebooted).
• ✅ The number of random lags will decrease.
• ✅ Increased battery life (less load on the processor).

⚠️ Note: Some Redmi Note models (e.g. Note 9 Pro on the MIUI 12.5) The system optimization item may be called System Acceleration or hidden in Settings. → Battery and performance.

4. Viruses and malicious applications: hidden “eaters” of RAM

If your Redmi Note suddenly began to slow down terribly, and RAM is clogged with unknown things - check the phone for viruses.

• 📈 Unexplained growth in RAM usage (e.g., only 500MB free of 6GB).
• 🔥 Overheating the phone into simple.
• 📴 Appearance of unfamiliar applications in Settings → Annexes.
• 💸 Advertising in notifications or browser.

Where to look for threats:

1. Open Settings → Applications → Application Management.
2. Sort by Memory Use.
3. Check for apps with suspicious names (e.g. com.system.update, android.helper.service).

For a deep check, use:

• 🛡️ Built-in scanner MIUI (Security → Antivirus).
• 🔍 StopeDroid (specializes in hidden miners).
• 📱 Malwarebytes (finds advertising software).

5 MIUI Updates: Why New Versions Are Eating More Memory

Each major MIUI update (e.g., switching from MIUI 12 to MIUI 13/14) increases the minimum RAM requirements.

If your Redmi Note 8 Pro with 6 GB of RAM is upgraded to MIUI 14, don’t be surprised that there is only 1-1.5 GB of free memory.

• 🔄 Reverse to the old version MIUI (brakes critical).
• ⚡ Use lightweight firmware (for example, MIUI Lite or custom Pixel Experience).
• 📱 Turn off animations in Settings → For developers (reduces the load on RAM).

How to Reverse the Old Version:

1. Download the necessary firmware from Xiaomifirmwareupdater.com.
2. Go to Settings → About the phone → System update.
3. Press three points. → Select a firmware file.
4. Select the downloaded file and confirm the rollback.

⚠️ Note: Reverse to the old version MIUI You can reset all the data. You can pre-reverse through Settings. → Additionally. → Backup and reset.

6.Monster apps: Who is to blame for memory leaks?

Some applications deliberately or mistakenly consume a huge amount of RAM.-5 «The "Sweet" Programs on Redmi Note:

1. Facebook and Facebook Messenger – up to 1 GB in the background.
2. TikTok – holds up to 800MB of memory even after closing.
3. PubG Mobile/Call of Duty Mobile – up to 1.5 GB during play + background processes.
4. Mi Browser – Caches web pages more aggressively than Chrome.
5. Xiaomi Cloud – synchronizes data in the background, consuming 200-400 MB.

How to reduce their appetite:

• 🚫 Turn off auto-start for unnecessary apps: Settings → Annexes → Application management → Auto-start
• 🔄 Limit background activity: Settings → Battery and performance → Battery management → Choice of applications
• 📥 Use lightweight versions (e.g. Facebook Lite, Messenger Lite).
• 🗑️ Clean the cache manually once a week: Settings → Warehouse → Cache data. → Clean up

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Even after closing the app via swipe up, it can remain in memory!To completely kill it, use the command adb shell am kill com.package.name (required ADB).

7. Hardware restrictions: when the "iron" is to blame

If all software methods don’t work, the problem may be in the hardware of your Redmi Note:

• 🔋 A worn-out battery (less than 80% health) makes the processor run at lower frequencies, which increases the load on RAM.
• 🔥 Overheating (due to dust in the connector or thermal paste) leads to trottling and inefficient memory use.
• 🛠️ Memory defect (rarely, but happens on budget models).

How to diagnose:

1. Check the battery health via ##4636## → Battery information or AccuBattery app.
2. Install CPU Monitor or AIDA64 to monitor temperature and trottling.
3. If the phone overheats without loading - contact the service for cleaning or replacing the thermal paste.

For the Redmi Note 10/11 with Snapdragon 6xx or Helio Gxx, the normal temperature under load is up to 45 ° C. If above 50 ° C, this is cause for concern.

FAQ: Frequent questions about memory on Xiaomi Redmi Note