How to check the rest of RAM on Xiaomi Redmi 9: all working methods

Introduction: Why it is important to monitor RAM on Redmi 9

RAM is your smartphone’s desktop, where active application data is temporarily stored. The Xiaomi Redmi 9 (and its Redmi 9A, 9C, 9T variants) has between 2GB and 4GB of RAM depending on the version. But even with 4GB, users often experience slowdowns, hang-ups, or sudden app closures, due to a lack of free RAM.

The performance of Redmi 9 is directly dependent on how much RAM is left free. If memory is clogged, the system begins to force the background processes to close, which leads to the loss of unsaved data (for example, in messengers or a browser). Moreover, MIUI aggressively optimizes memory, sometimes mistakenly "killing" the right applications, so the ability to check the rest of RAM is a key skill for owners of budget Xiaomi smartphones.

In this article, we will discuss 5 ways to check RAM, from standard MIUI tools to hidden features for power users, and explain why memory can “disappear” and how to avoid it.

Method 1: Using standard MIUI settings

The easiest method is to use the built-in MIUI tools, which do not require any additional applications to be installed, and is suitable even for beginners.

1. Open the Settings menu (the gear icon on the main screen).
2. Go to the About Phone section.
3. Stick to Memory (or Storage and Memory in some versions of MIUI).
4. At the top of the screen, you'll see a graph that splits into RAM and internal memory. Click on RAM.

This will show:

• 📊 Total RAM – the full amount of RAM of your Redmi 9 (for example, 3.0 GB).
• 🔄 How much memory is currently occupied.
• ✅ Free – the remaining RAM available for new tasks.
• 📉 Average load – Memory usage schedule for the last hours.

Notice the Clean button at the bottom of the screen, which allows you to close all background processes in one tap, but don't overuse it -- MIUI itself optimizes memory, and manual cleaning can slow down the re-launch of applications.

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If there is no RAM tab in the Memory section, upgrade MIUI to the latest version. In older firmware (below MIUI 12), this section may not be available.

Method 2: via the notification panel (fast access)

You want to go through the settings? There's a faster way, through the notification bar, which works on all versions of Redmi 9 (including 9A/9C) and takes just a few seconds:

1. Swipe your finger down from the top of the screen to open the notification bar.
2. Swipe down again to open the full panel.
3. Find the widget Use RAM (usually located next to the battery widget). If it is not, tap the icon ⚙️ Edit and add it manually.
4. Click on the RAM widget - a window with detailed information will open.

In this window, you'll see:

• 📱 Current RAM loading in percentage (e.g. 68%).
• 🔄 Cleaning button – it works the same as in the settings.
• 📊 List of applications that consume the most memory (you can close unnecessary ones manually).

The advantage of this method is instant access without unnecessary transitions. The disadvantage is less detailed information than the Settings → Memory section.

Method 3: Using the MIUI Security app

The Security app (or MIUI Security) is a Swiss knife for Xiaomi optimization, which not only shows the rest of the RAM, but also helps to clear memory from unnecessary processes.

1. Find the Security icon on the home screen or in the application menu (check-tick shield).
2. Open the app and go to the Optimization tab (or Acceleration in older versions).
3. At the top of the screen you will see a circular indicator labeled “Use of RAM”.
4. Slap it on to open up detailed statistics.

Here are available:

• 🔍 Detailed list of processes sorted by memory consumption.
• ⚡ Quick Optimization – Closes Background Tasks with a Press.
• 📈 Timeline of RAM usage in the last 24 hours.
• ⚠️ Warnings about apps that eat too much memory.

An important nuance: some versions of MIUI may not have the Security app, in which case it can be downloaded from the Mi App Store (the official Xiaomi store).

Method 4: through the engineering menu (for power users)

If you want the most accurate information about RAM, including hidden processes, you can use the engineering menu, which is suitable for advanced users, because it requires the input of special codes.

Instructions:

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. In the menu that opens, select Usage statistics (or Usage Statistics in Russian).
4. Go to the Memory usage tab.

Here you'll see:

• 📊 Total RAM — full-length RAM.
• 🔴 Used RAM — Occupied memory (including system processes).
• 🟢 Free RAM — memory-free.
• 🟡 Cached – memory used for cache (it can be released without consequences).

⚠️ Warning: Do not change other settings in the engineering menu unless you know what they are intended for. Incorrect actions can lead to malfunctions in the smartphone or even data loss.

The engineering menu shows real-world RAM usage, including hidden system processes that don’t show up in standard settings. This is useful if you suspect memory is leaking due to MIUI errors.

Method 5: through ADB (for developers)

If you're a developer or just like to dig through the system, you can check RAM through ADB (Android Debug Bridge), which gives you the most complete control, but requires connecting Redmi 9 to a computer.

What you need:

• 🖥️ Computer with installed ADB Tools.
• 🔌 USB-cable (preferably original).
• 📱 Included debugging by USB on a smartphone (in Settings) → The phone. → Version. MIUI Press 7 times, then return to Settings → Additionally. → For developers).

Instructions:

1. Connect Redmi 9 to your computer and confirm your debugging permission.
2. Open the Command Prompt (Windows) or Terminal (macOS/Linux).
3. Enter the command to check the connection: adb devices Wait for the serial number of your device to appear.
4. Run the command to get information about RAM: adb shell dumpsys meminfo

In the conclusion, find the lines:

• MemTotal is the total amount of RAM.
• MemFree is a free memory.
• Cached is the memory used for cache.

⚠️ Attention: Use ADB Do not follow commands that you do not know the purpose of, which can disrupt the system.

Enable debugging over USB

Install ADB Tools on PC

Connect the original USB-cable

Check the connection of the adb device team

Learn the output of the dumpsys meminfo command-->

Why is the RAM on Redmi 9 running out so fast?

Even if you have a Redmi 9 with 4GB of RAM, your memory can literally disappear in front of your eyes. Here are 5 main reasons:

The most common problem on Redmi 9 is memory leaks in MIUI. Some firmware versions (especially MIUI 11 and MIUI 12.0.x) suffer from bugs when the system does not release RAM after closing applications, in which case only a firmware update or factory reset helps.

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If after cleaning the RAM memory again quickly runs out – check the phone for viruses or update the MIUI to the latest version.

How to Free RAM on Xiaomi Redmi 9?

If you have less than 200-300 MB of free memory, your smartphone will start to slow down. Here are 7 working ways to free up RAM:

• 🧹 Manual Cleaning: Use the Clean button in the notification panel or in Settings → Memory.
• ❌ Closing background apps: In the menu Recent apps swipe up unnecessary programs.
• ⚙️ Disable Autostart: Go to Settings → Annexes → Manage Auto Startup and Turn Off Autoboot for Unnecessary Apps.
• 🗑️ Cache cleaning: In Settings → Warehouse → Clean up, delete temporary files.
• 🔄 Reboot: Sometimes a simple reboot frees up to 500-700MB of RAM.
• 🛡️ Use Lite Apps: Replace Facebook with Facebook Lite and Messenger with Messenger Lite.
• 📱 Disabling animation: In Settings → For developers, reduce the scale of animation to 0.5x.

Radical method: If nothing works, reset to factory settings (but remember to back up!) This will delete all user data, but return the smartphone to its "primary freshness."

Alternative launchers (like Nova Launcher or Lawnchair) also need to be considered, which consume less memory than a standard MIUI launcher and can be a bit off-loading.

FAQ: Answers to Frequent Questions