How to find out the amount of memory on Xiaomi Redmi 9 Pro: all the ways from settings to hidden menus

Owners of Xiaomi Redmi 9 Pro often face the need to check how much memory is left on the device – whether it is RAM for multitasking or built-in ROM for storing files. This is especially true when you brake the system, install applications errors or before buying a used phone. In this article, we will discuss all the official and hidden methods of checking memory on the Redmi 9 Pro, including engineering menus and third-party utilities, and explain why the performance may differ from the stated manufacturer.

The Redmi 9 Pro came in several versions: 4/64 GB, 4/128 GB and 6/128 GB of memory. However, the actual available volume is always smaller due to preinstalled software (MIUI) and system partitions. For example, from 128 GB, the user is available about 112-115 GB. Next, you will learn how to accurately measure free space and avoid common diagnostic errors.

1. Memory check through standard MIUI settings

The easiest way is to use the built-in MIUI tools. This method does not require installing additional applications and works on all versions of the Redmi 9 Pro firmware (including global and Chinese).

Open the Settings menu (the gear icon on the home screen) and follow the following steps:

• 📱 Go to About Phone (usually at the bottom of the list).
• 🔍 Tap on Device Characteristics or Memory (depending on version) MIUI).
• 📊 Here you will see: RAM: total volume and available amount (for example, "4 GB / 1.2 GB free"). ROM: "System memory" and "Internal memory" sections with a schedule of use.

Note that in some versions of MIUI 12/13, the Memory section may be directly in the main settings menu. If you do not find it, search the settings (the magnifier in the upper right corner) and enter the "memory" request.

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If the Memory section displays less space than expected, check the MIUI/Backup folder, which can store old backups up to several gigabytes.

2. Detailed analysis through "Storage and USB-drives"

For more information about which files are taking up space, use the Storage section, which shows the distribution of memory into categories: applications, images, video, audio, etc. This will help you quickly find and delete unnecessary data.

Instructions:

1. Open the Settings. → Warehouse (or Memory and USB-storage).
2. Wait for the chart to load (it can take up to 30 seconds).
3. Slip on any category (such as Apps) to see a list of the heaviest programs.
4. To clear the cache, click Clean in the upper right corner.

⚠️ Warning: Do not cache system applications (e.g. com.android.systemui) manually through the All Apps menu. MIUI.

3.Use of the engineering menu (#4636##)

The hidden engineering menu provides technical information about the device, including detailed data on RAM and ROM, which is suitable for advanced users, as it requires caution.

To open the menu:

1. Open the Phone app.
2. Enter the combination: ##4636## (no spaces).
3. Select the item Phone Information.
4. Scroll down to the Memory block.

Here you'll see:

• 📱 Total RAM: the full amount of RAM (for example, 3.8 GB version 4/64 GB).
• 💾 Available RAM: free-range RAM at the moment.
• 📁 Storage: Internal memory information (including system partitions).

⚠️ Note: Do not change the settings in the engineering menu unless you understand their purpose. For example, incorrect settings in the Battery Information section can lead to a quick battery discharge.

Once a week |Only when the phone starts to brake |Never checked |Use automatic cleaners-->

4. Third-party applications for memory analysis

If the built-in MIUI tools aren't enough, you can use third-party utilities, which provide advanced statistics, including analysis of garbage, duplicate files and hidden caches.

Top.-3 Proven applications for Redmi 9 Pro:

• 🛠️ Files by Google: shows junk files (temporary data, empty folders) and suggests that they be deleted.
• 📊 SD Maid: deep analysis of system files, search for duplicates and residues of remote applications. Requires root rights for full functionality.
• 🔍 DiskUsage: Visualizes memory usage as an interactive map, useful for finding heavy folders.

Example of Files by Google:

1. Install the app from Google Play.
2. Open it and give access to the storage.
3. Go to the Cleanup tab.
4. Click Free Space and select files to delete.

Backup of important files|Check the list of applications for unnecessary|Close all background programs|Connect the charger (for long-term operations)-->

⚠️ Note: Applications like Clean Master or CCleaner often contain aggressive advertising and can delete useful system files.

5. Memory check via ADB (for advanced users)

If you want the most accurate memory data, including hidden system partitions, you can use Android Debug Bridge (ADB), a method that requires connecting your phone to your computer and basic command line knowledge.

Instructions:

1. Install ADB Tools on your PC.
2. Turn on Redmi 9 Pro Developer Mode: Go to Settings → About Phone and tap the MIUI version 7 times.
3. Return to Settings → Additional → For developers and activate Debugging over USB.
4. Connect the phone to your PC and type in the command line: adb shell df -h This command will show all memory sections indicating free and occupied space.

Example of output of the command df -h:

Filesystem      Size  Used Avail Use% Mounted on




/dev/block/mmcblk0p53




115G   45G   70G  39% /data

Here:

• /data – user data (photos, applications).
• /system – System files (usually 2-4 GB).
• /cache – update cache (can be cleared without consequences).

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The adb shell cat /proc/meminfo command will show detailed information about RAM, including kernel and application usage.

6.How to verify the authenticity of memory (is not a fake phone?)

One of the common problems with buying a used Redmi 9 Pro is that it doesn't match the actual memory, for example, a 64GB drive with a spoofed firmware instead of a 128GB drive, and you can check this in several ways:

Method 1: File recording test

1. Download a large file (for example, a 30-50 GB movie).
2. Copy it onto your phone.
3. If the file does not fit, and the system shows that there is a place – this is a sign of forgery.

Method 2: Verification with AIDA64

• Install the AIDA64 app from Google Play.
• Go to the Storage section → Memory of the device.
• Compare the numbers with the official specifications of the Redmi 9 Pro (see the table below).

⚠️ Attention: If in AIDA64 displays a memory type eMMC 5.1, and the seller claims that it is installed UFS The Redmi 9 Pro comes with only the eMMC 5.1 (except for the Indian version with the first version). UFS 2.1, which is easily distinguished by the marking on the box).

7.Memory Optimization: Tips for the Redmi 9 Pro

Even if your Redmi 9 Pro has enough memory, misuse of it can lead to brakes. Here are some optimization tips:

For RAM (RAM):

• 🔄 Turn off interface animation: go to Settings → Special facilities → Remove the animation. It'll reduce the load on RAM.
• 🚫 Limit background activity: in Settings → Annexes → Permits → Autorun disable autorun for unnecessary programs.
• 🔄 Use the "Lite" versions of applications (for example, Facebook Lite, Messenger Lite).

For ROM (in-built-in memory):

• 📁 Move the files to SD-map: C Settings → Warehouse → Data portability (not working for all applications).
• ☁️ Set up an automatic upload to the cloud (Google Photos, Mi Cloud).
• 🗑️ Regularly clean the Download folder and app cache through Settings → Warehouse → Clean up.

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If the phone is slowing down, try turning off the “RAM Extension” function in Settings. → Additionally. → Memory expansion. Some firmware is unstable.

FAQ: Frequent questions about Redmi memory 9 Pro