Users planning to buy a budget smartphone or upgrade an old device often wonder about the real system requirements of a modern mobile operating system. In particular, the version Android 9 Piereleased by Google brought many innovations in the field of artificial intelligence and battery management, but also required certain resources from the gadget's hardware. Understanding how many gigabytes the system itself “eats” is critical for choosing the right amount of internal storage.
Many mistakenly believe that the stated 16 or 32 GB of internal memory will be fully available for installing applications and storing photos. In fact, a significant part of this space is allocated for operating system files, pre-installed services and recovery partitions. If you do not know in advance how much space it will take system partition, you risk facing a constant lack of space after just a month of using the new phone.
In this article we will analyze in detail the structure of the occupied space, the influence of manufacturer interfaces and give practical recommendations for freeing up space. You'll learn why available memory can differ by several gigabytes on devices running the same OS version.
Google's official system resource requirements
Google sets minimum standards for hardware manufacturers who want to certify their devices under the Android brand. For version 9.0, these requirements have been slightly revised upward compared to previous releases due to the introduction of new security features and background processes.
The minimum amount of RAM (RAM) required for stable operation was set at 1 GB, although 2 GB and above are recommended for comfortable use. As for the built-in memory (ROM), the situation here is more complicated. The basic image of the system, excluding drivers and the manufacturer's interface, takes up a certain volume, which varies depending on the processor architecture.
It is worth considering that “pure” Android, which can be seen on smartphones of the line Pixel, is the most lightweight implementation option. Other vendors add their own add-ons, which significantly increase the final weight of the firmware. Below are the basic numbers that you should focus on when assessing the minimum configurations.
- 📱 The minimum amount of RAM to run the interface is 1 GB.
- 💾 The recommended amount of ROM for installing the system is from 8 GB (physically).
- ⚙️ Basic size The system image (system.img) varies from 2.5 to 4 GB.
If you choose a phone with 16 GB of memory, remember that after installing all security updates, the user may have less than 8 GB of free space left.
The actual weight of the firmware, taking into account manufacturer interfaces
In practice, “naked” Android is rare. Most manufacturers install their own shells on top of the system, such as from Xiaomi, from Samsung or from OPPO. These add-ons include additional applications, widgets, themes and services that can increase the size of the system partition by one and a half to two times. MIUI from Xiaomi, One UI from Samsung or ColorOS from OPPO. These add-ons include additional applications, widgets, themes and services that can increase the size of the system partition by one and a half to two times.
For example, firmware based on Android 9 from Samsung can take up to 6-7 GB immediately after resetting the settings. This is due to the presence of many Knox system services, the Galaxy Store and other pre-installed components. At the same time, lightweight versions of Android Go, optimized for budget devices, take up significantly less space, sometimes not exceeding 2 GB.
The size also depends on the processor architecture. Devices based on ARM64 require more space for libraries compared to legacy 32-bit systems, but provide better performance. It is important to understand that the manufacturer can reserve part of the memory for recovery partitions and bootloaders, which are not visible to the user in Explorer.
⚠️ Attention: The amount of memory occupied can vary significantly even within the same phone model, depending on the region of delivery and the specific firmware version installed at the factory.
Memory partition structure and hidden reserves
The internal storage of the smartphone is divided into several logical parts, and not all of them are available for recording user data. Understanding this structure will help you realize exactly where precious gigabytes disappear immediately after turning on the device.
The main section that the user sees is usually labeled as /data. This is where your apps, photos and cache are stored. However, the system files are located in the /systempartition, which is read-only by default. In addition, there is a section containing hardware drivers, and a section containing the system kernel. /vendor, containing hardware drivers, and a section /boot with the system core.
The recovery section (Recovery) and the bootloader (Bootloader) deserve special attention. They take up space on the physical memory chip, reducing the total available space. Manufacturers often do not indicate these details in the specifications, focusing only on the total capacity of the drive.
| Section name | Approximate size | Purpose |
|---|---|---|
/system |
3.0 - 6.0 GB | Operating files systems and applications |
/vendor |
0.5 - 1.5 GB | Hardware drivers and specific libraries |
/boot |
32 - 64 MB | System kernel and Raminsk |
/recovery |
32 - 64 MB | Recovery and reset mode |
/cache |
256 – 512 MB | Temporary system files (dynamic) |
The physical amount of memory is always greater than the logical amount available to the user, due to service partitions and formatting features of the file system.
How to check the space occupied in the settings
To find out the exact amount that the system occupies on your specific device, you do not need to resort to complex calculations. The built-in tools of Android 9 provide fairly detailed statistics on storage usage.
To get information, you need to go to the settings menu. The path may vary slightly depending on the shell, but the logic remains the same. You need to find the section responsible for storing data.
In most cases, the sequence of actions is as follows: open Settings, then find the item Storage or Memory. In some interfaces, this item is hidden inside the tab System or About device.
Settings → System → StorageA diagram will be displayed on the screen, where the space occupied by the system, applications, images and other content will be highlighted in color. By clicking on "System" or "Other", you can get a more detailed breakdown. Please note that the “System” value often includes not only OS files, but also system application data that cannot be deleted without root access.
☑️ Memory diagnostics
Factors influencing the growth of system volume over time
Immediately after purchase, the phone occupies one amount of memory, but during operation this figure inevitably grows. This is due to the peculiarity of modern operating systems, which are constantly updated and accumulate data.
The first factor is security updates and functional updates. Each new patch can add files to the system partition or create backup copies of previous versions for rollback purposes. In Android 9, the update mechanism may leave temporary installation files that are not always deleted automatically.
The second factor is the growth of application data. Even system apps, such as Google Play Services or the keyboard, accumulate cache, databases and logs. Over time, this data can occupy hundreds of megabytes, formally referring to system software.
⚠️ Attention: Do not try to manually delete files from system folders through file managers with root access. This may lead to a violation of the integrity of the firmware and loss of warranty.
The third factor is logs and error reports. If the system crashes, Android creates memory dumps and reports that are stored in internal directories. On a working device, their volume is minimal, but if there are software errors, they can grow to gigabytes.
Why is the “Other” section growing so quickly?
This section often contains instant messenger caches (Telegram, WhatsApp), downloaded files that the system did not recognize as media, as well as remnants of deleted applications and temporary update files.
Methods for optimizing and freeing up system space
If you find that Android 9 takes up too much space, there are legal and safe ways to get some back memory. It is not possible to completely remove the system, but you can reduce the amount of data it generates.
The most effective method is to reset the settings to factory defaults. This removes all user garbage accumulated over time and returns the system partition to its original state. Before doing this, be sure to back up your important data to the cloud or to your computer.
You can also disable unused system applications. In Android 9, many pre-installed apps can not only be uninstalled, but also completely disabled. This prevents them from updating and cache accumulation.
- 🗑️ Use the “Clear cache” function in the storage section for system applications.
- 🚫 Disable unnecessary Google or manufacturer services in the application menu.
- 🔄 Regularly check for large files in folder
Downloadand clean it.
For advanced users, it is possible to use ADB commands to remove system software (bloatware). This requires a connection to a computer and some knowledge, but can free up up to 1-2 GB of memory.
adb shell pm uninstall -k --user 0Use this command with caution, substituting the exact package name of the application you want to remove. An error can lead to unstable operation of the system.
Before resetting the settings, remove the SD memory card so as not to accidentally format it along with the internal memory of the phone.
Comparison of Android 9 with previous and subsequent versions
To understand the place of Android 9 in the evolution of mobile operating systems, it is useful to compare its requirements with neighboring ones versions. Each new iteration of Android brings improvements, but often at the cost of an increased appetite for resources.
Compared to Android 8.0 Oreo, the Pie version has become a little heavier due to the introduction of adaptive brightness and improved AI-based battery management. However, it still remains lighter than Android 10 and 11, where requirements for security and data encryption have increased even more.
For older devices with limited memory, the transition to Android 9 could be the last major update. The developers tried to optimize the code so that the system worked smoothly even on 2 GB of RAM, but the amount of free space in the ROM became a critical factor.
Has Android 9 become heavier than Android 8?
Yes, the minimum recommended amount of internal memory for comfortable operation has increased. If 16 GB was enough for Android 8, then 32 GB is highly recommended for Android 9 due to the increased size of system images and updates.
Is it possible to install Android 9 on a phone with 8 GB of memory?
Technically this is possible, especially in versions of Android Go. However, the standard version of Android 9 on such a device will work extremely slowly, and there will be practically no space for installing applications.
Does the number of installed applications affect the size of the system?
No, the size of the system partition itself (/system) remains unchanged. However, application data and their cache are stored in the user partition, which can be visually perceived as part of the total memory costs.
Why does the system take up more space after an update?
When updating, the system often stores the old version of the firmware in a hidden partition in case of a rollback, and also unpacks new files in parallel with the old ones until the installation process is completed.
How find out the exact size of the system partition without superuser rights?
The exact size of the partition /system can only be seen through the engineering menu or special applications such as DiskUsage that require root access. In normal settings, the total value “System” is displayed.