How to find out the amount of memory on Xiaomi Redmi 9: RAM and built-in storage

Xiaomi Redmi 9 remains a popular choice among users who value balance of price and performance. However, over time, even 64 or 128 GB of internal memory can fill up, and 3-4 GB of RAM can start slowing down when multitasking. How do you know exactly how much memory is available on your device?

In this article, we'll look at all the ways we can check, from standard MIUI settings to hidden engineering menus, not only how to view the current volume, but also how to interpret the metrics: why less memory is available than the box says, and what to do if the data doesn't match the declared characteristics. And compare the Redmi 9 with other models in the series in terms of memory capacity, which will help you understand whether to consider an upgrade.

1. Standard method: through MIUI settings

The easiest and safest method is to use the system’s built-in tools.It doesn’t require third-party apps to be installed and works on any version of MIUI, including the latest MIUI 14 (Android 12) for Redmi 9.

To check the amount of internal memory (ROM) and RAM (RAM), follow the following steps:

• 📱 Open the Settings app (the gear icon on the home screen).
• 🔍 Scroll down and select the About Phone section.
• 📊 Tap on Device Characteristics or General Information (the name may vary depending on the firmware version).
• 🔍 Find the RAM lines (RAM) And Storage, and this is going to show the total volume and the space available.

Note that the Memory section displays a real available volume that is always smaller than the one on the box. For example, for a model with 64 GB of ROM, the system will show about 52-55 GB. This is normal - part of the memory is occupied by firmware, preinstalled applications and utility files.

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If the settings do not show the “About Phone” section, try entering the “memory” or “storage” request in the settings search bar.

Detailed analysis: "Storage" menu

For more information about what exactly takes up space on your Redmi 9, use the Storage section, where you can see the distribution of memory by category: apps, photos, videos, cache, etc.

Instructions:

1. Go to Settings → Memory (or Storage).
2. Wait for the chart to load (may take a few seconds).
3. Slip on any category (such as Apps) to see a list of the most voracious programs.

The Cleanup feature is also available in this menu, which automatically finds unnecessary files (cache, temporary data, duplicates) that can be safely deleted. On Redmi 9 with MIUI 12+, cleaning can free up 1-3 GB of space in one tap.

3. Verification through the engineering menu (for experienced users)

If you want technical details about memory — like the type of flash memory you use (eMMC or UFS) or the actual read/write speed — you can use the engineering menu. Be careful: the wrong actions here can lead to failures!

How to open it:

• 📞 Enter the phone combination in the app: ##4636##.
• 🔧 In the menu that opens, select Phone Information.
• 📊 Scroll down to the Memory section - here will be detailed data on RAM and ROM.

⚠️ Note: Do not change any settings in the engineering menu unless you are sure of their purpose. For example, a BandMode or Radio Information item can cause network loss if you have incorrect settings.

In the engineering menu you can also see:

• 🔹 Memory Type: Redmi 9 is equipped with eMMC 5.1 (unlike the Redmi 9). UFS 2.1 in more expensive models).
• 🔹 Read/write speed: for eMMC 5.1 ~250 MB/s (reading) and ~125 MB/s (recording).
• 🔹 Partitioning: How much space does it take? /system, /data, /cache.

4. Third-party applications for memory analysis

If built-in tools aren't enough, you can install specialized utilities that provide advanced statistics, including memory chip temperature, flash drive wear, and even lifetime forecasts.

Top.-3 supplant 9:

Example of the report from AIDA64 for Redmi 9 4/64 GB:

• 🔹 RAM: 4 GB (LPDDR4X, 1866 MHz, manufacturer — Samsung/Micron).
• 🔹 ROM: 64 GB (eMMC) 5.1, manufacturer — Kingston/Hynix).
• 🔹 Memory health: "Good" (if the wear indicator) < 10%).

⚠️ Note: Applications like Clean Master or CCleaner often show inaccurate memory data and can delete useful files. For Redmi 9, it is better to use specialized utilities from the table above.

Close all background applications|Connect your phone to charge (analysis can take 5-10 minutes)|Turn off battery saving mode|Launch. AIDA64 on behalf of the administrator (if there is root)-->

5. Comparison with other Redmi models

If you’re thinking about buying a new smartphone, it’s helpful to compare the Redmi 9 to other devices in the series in terms of size and type of memory, which will help you see if the upgrade is worth the extra cost.

Key findings:

• 🔹 Redmi 9 uses 5.1 eMMC, which is 30-50% slower than the current model. UFS 2.1 in Redmi Note 9.This affects the speed of downloading applications and multitasking.
• 🔹 Models with UFS (Redmi 10 is better for playing games and working with large files.
• 🔹 If you need more than 128GB, consider the Redmi Note 11 with up to 1TB microSD support.

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For most users 4/64 GB in Redmi 9 enough 2–3 year of active use, but for games (Genshin Impact, Call of Duty) or video shooting in the video 4K It is better to choose a model with UFS-memory.

6. Frequent problems and solutions

Sometimes Redmi 9 users experience inconsistencies in the display memory or a sudden decrease in free space, and let’s look at typical situations and how to fix them.

Problem 1: Memory disappears without a reason

If the space is decreasing on its own, check:

• 📁 App cache: clean it up in Settings → Memory. → Cleanup.
• 📥 Downloads: Download folder is often clogged with unnecessary files.
• 🤖 Updates MIUI: the system can download firmware in the background (check in Settings) → The phone. → Updating the system).

Problem 2: RAM is always loaded at 80-90%

On the Redmi 9 with 3-4 GB of RAM, this is normal due to the features of MIUI, but if the phone brakes:

• 🔄 Turn off animation: in Settings → Special facilities → Remove animations.
• 🚫 Limit background processes: Settings → Battery → Performance mode → Easy regime.
• 🔧 Install L Speed (root required) to optimize RAM usage.

Problem 3: Memory is “reserved by the system”

In MIUI, part of the ROM is assigned to:

• 🔄 Section of the reconstruction section (~500MB).
• 📦 Pre-installed apps (Facebook, Netflix, etc.) – they can be disabled, but not removed without root.
• 🔒 Encryption: If enabled, takes ~1-2 GB.

⚠️ Note: If significantly less memory is displayed in the settings than it should be (e.g. 32GB instead of 64), this may indicate a fake or damage to the memory chip. AIDA64 Or go to the service center.

7 How to make room for Redmi 9

If you have less than 10 percent of your memory, you'll start to run slower, and here are some effective ways to clean up your memory without losing any important data.

• 📸 Photo and video: Move media files to microSD (if supported) or to the cloud (Google Photos, Mi Cloud).Use compression: in Google Photos, select High Quality over Original Photos.
• 🎮 Games: Remove the cache of games through Settings → Annexes → [Game] → Warehouse → Clear the cache. PUBG Mobile or Call of Duty use the option Lightweight graphics.
• 📱 System Files: Clear the folder DCIM/.thumbnails — Here are the photos (may weigh up to a few). 1 Remove the old ones APK-files from the Download folder.

To automatically clean up, install Files by Google – the application will find duplicates, large files and unnecessary data.

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If you shoot video frequently, turn on the camera option “Video Compression” (in camera settings) to reduce file size by 30-40% without noticeable loss of quality.

FAQ: Answers to Frequent Questions