How to access the System folder on Android: Instructions and risks

Accessing Android system files is a topic that requires caution and an understanding of the operating system architecture. The standard file manager pre-installed on most smartphones deliberately hides root directories from the user. This is done to protect the integrity operating system and prevent accidental deletion of critical components, which can lead to device inoperability.

The folder /system contains files responsible for the operation of the interface, system applications and basic libraries. The average user rarely needs to edit this data, but enthusiasts and developers often need access to remove pre-installed software (bloatware) or deep customization. There are several methods for gaining access, which differ radically in the level of complexity and required rights.

In this article we will analyze in detail safe ways to view content, as well as methods for gaining full control over the system partition. You'll learn the difference between simple viewing and recording, and what tools are needed for each scenario. Remember that you carry out any manipulations with root files at your own peril and risk.

File system architecture and access rights

The Android file system is based on the Linux kernel, where a strict hierarchy of rights operates. The folder /system is mounted in read-only mode by default. This means that even if you can visually see the files, you will not be able to change or delete them without special privileges. Such protection prevents damage to the firmware by malware or inexperienced actions of the owner.

To change the status of the partition, you must obtain root access (superuser). Having these rights removes restrictions imposed by the manufacturer and allows you to write data to protected memory areas. However, modern versions of Android, starting from 6.0 and especially in versions 10-14, have introduced a mechanism System-as-Root and strict verification of the integrity of the bootloader (Verified Boot), which complicates the modification process.

Without root access, you are limited to only viewing some system logs or using debug interfaces that do not provide direct access to files. Understanding the difference between viewing and recording is critical before taking any action. If your goal is simply to find out the system version or look at the list of fonts, full access may not be required.

⚠️ Attention: Changing files in the /system directory without creating a backup copy may lead to the device being “bricked”, after which you will need to reflash it via a computer.

Access methods without root access

If you don't want full superuser rights, there are workarounds for viewing the content. The most reliable tool in this case is USB debugging (ADB). This method requires connecting your smartphone to your computer and installing the appropriate drivers. Through the console, you can execute commands that emulate access to files.

To get started, you need to activate developer mode. Go to Settings → About phone and click on the build number seven times. After this, an item For Developerswill appear in the menu, where you need to enable the option USB Debugging. Once you connect your device to your PC, you can use shell commands to navigate.

Command adb shell opens the device terminal. Then you can use standard Linux utilities, such as ls to view a list of files or cat to read their contents. For example, to see the files in the fonts folder, type:

adb shell ls /system/fonts

This method is safe because it prevents files from being accidentally deleted, but it is not convenient for bulk copying or editing. There are also specialized file managers that can show hidden folders through a local server on the phone, but their functionality without root will still be limited to read mode.

Obtaining root access and using file managers

To fully edit a folder /system you need to unlock the bootloader and set the rights superuser. The most popular tool for this is Magisk. The process involves flashing a modified boot image, which will void the device's warranty in most cases. After successfully installing root access, any advanced file manager will be able to work with the system partition.

Among the applications that support working with root, stand out Root Explorer, Solid Explorer i MT Manager. When launched for the first time, such an application will ask for permission to access the superuser. After confirmation, a button for switching the operating mode will appear in the interface, often designated as R/W (Read/Write). Clicking on it will remount the partition /system into recording mode.

The interface of these apps allows you to copy, delete and rename files as easily as in the regular phone memory. You can remove system applications by replacing their APK files, or edit configuration files .prop to change device characteristics. However, it is worth remembering that deleting critical libraries may stop the operation of the touch screen or communication module.

Working with system files via ADB with rights

Even if you have root access on the device, working through a computer using ADB is often more convenient and reliable. This allows you to use the power of desktop text editors and scripts. To execute commands as a superuser in ADB mode, you must enter the command su after logging into the shell.

An example sequence of actions for copying a system file to a computer is as follows. First you request rights, then copy the file to a temporary directory with full rights, and only after that upload it to your PC:

adb shell
su
cp /system/build.prop /sdcard/build_backup.prop
exit
adb pull /sdcard/build_backup.prop

This approach minimizes the risk of errors, since you work in a text terminal and see every step. In addition, through ADB, you can bulk remove system applications using the command pm uninstall, which is safer than physically deleting APK files from the folder, since the system will correctly update its databases.

Risks and precautions during modification

Interfering with the operation of the system partition is always associated with risks. The most common problem is bootloop (cyclic reboot), when the device cannot complete the boot due to the absence of a critical file. In this case, recovery is only possible through Recovery or Fastboot mode, which requires a computer and the original firmware image.

Another threat is the disruption of OTA updates. The modified partition /system will not pass the integrity check, and the official over-the-air update will not be installed. You will have to either return the stock or update manually via downloaded images. Also, some banking applications and games with anti-cheat protection may refuse to work on a rooted device.

Always create a full backup (Nandroid backup) via custom recovery (for example TWRP) before making any changes. This will allow you to roll back the system to its original state in a couple of minutes in the event of a fatal error. Do not rely solely on cloud backups, as they do not save system settings and files.

⚠️ Warning: Deleting files associated with the framework (framework-res.apk) or Google services is almost guaranteed to cause the interface to not work.

Comparison of file system access methods

The choice of tool depends on your goals. If you just need to look up the Android version or the name of the processor, the phone settings will suffice. To remove ads from system applications, ADB without root is suitable. For deep customization and replacement of fonts at the system level, full access through the file manager with superuser rights is required.

The table below shows a comparison of the main methods according to key parameters:

Method	Root required	Writing ability	Complexity	Risk of breakdown
Standard file manager	No	No	Low	None
ADB (USB debugging)	No (optional)	Read only / Uninstall applications	Medium	Low
Root manager (on device)	Yes	Full access	Medium	High
ADB + Root	Yes	Full access + scripts	High	Average

Each method has its own advantages. ADB is good because if you make a mistake in a command on a computer, the phone usually does not have time to “fall”, and you can quickly correct the error. Working directly on the phone screen through the touch file manager is faster, but there is a higher chance of accidentally clicking or deleting the wrong file.

Frequently asked questions and answers (FAQ)

Can I go to the system folder without computer?

Yes, this is possible, but only if the device has already been rooted. You will need to install an application like Root Explorer or Solid Explorer, give it superuser rights and enable mount mode R/W. Without root access through the phone, you can see only part of the files available for reading.

What to do if the phone goes into an endless reboot after deleting a file?

You need to boot into Recovery mode (usually by holding down the power button and volume up). If you have a custom recovery installed, restore the system from a previously created Nandroid backup. If the recovery is stock, you will need to connect to a PC and flash the original system image through a tool like Odin (for Samsung) or Fastboot (for Pixel and others).

Is it safe to delete applications from the system/app folder?

It is safe to delete only those applications whose purpose you are 100% sure of. For example, you can delete the manufacturer's maps or browser if you don't use them. It is absolutely forbidden to delete packages with the names framework, services or runtime this will disrupt the operation of the OS.

Why did banking applications stop working after getting root?

Security applications detect the presence of superuser rights and block startup for reasons of data protection. To get around this, you can enable the function Zygisk in the Magisk settings and add banking applications to the exclusion list (DenyList), hiding from them the fact that you have root access.

⚠️ Attention: Settings interfaces and names of menu items may differ depending on the version of Android and the manufacturer’s shell (MIUI, OneUI, ColorOS). Always check the documentation for your specific model.

Alternative method via Termux

If you are not root, but have the Termux terminal emulator installed, you can use it to send ADB commands locally, but the functionality will be very limited compared to connecting to a PC.