How to view system files on Android: instructions

Modern smartphones based on Android hide a significant part of the file system from the user, and this was not done by chance. Restricting access to root directories protects the operating system from accidentally deleting critical components that keep the device running. However, in some situations, for example, when deep cleaning garbage or transferring specific data, it becomes necessary to look “under the hood” of the system.

It is impossible to see these hidden structures using standard means of a regular Explorer, since they are marked with the protected flag. To solve this problem, there are various methods: from using special applications with extended rights to connecting to a computer through debugging. It is important to understand that interfering with the operation of system partitions requires caution and an understanding of the directory structure.

In this material, we will examine in detail safe ways to view system files, explain the difference between internal memory and the system partition, and also consider tools for advanced users. You will learn which folders you can touch and which ones are best avoided so as not to turn your smartphone into a “brick.”

Android file system structure

The file system Android is based on the Linux kernel, which implies a strict hierarchy of directories. Unlike Windows, where drives are designated by letters, there is a single directory tree starting at the root, indicated by a slash (/). User data is usually located in a partition /data, while OS system files are located in a partition /system, which is read-only by default.

Understanding the structure helps avoid fatal errors. For example, folder /sdcard is often thought of as internal storage, but is technically an emulation accessible to applications. System libraries and executable files are located deeper, in protected areas, where access is only available to the superuser (root).

⚠️ Attention: Accidentally changing weights or deleting files in a directory /system/bin or /system/lib can lead to a cyclic reboot of the device or complete loss performance.

Special paths are used to navigate through these structures. Below is a table of the main system directories that you may encounter during a deep analysis of the device:

Directory path	Description of contents	Default access
/system/app	Preinstalled system applications	Only read
/data/data	Data and cache of installed applications	Root only
/system/etc	System configuration files	Read only
/proc	Real-time information about processes and kernel	Read only

Knowledge of these paths is necessary when using the console or specialized software. Without an exact address, it is almost impossible to find the desired log or configuration file among thousands of other elements.

Viewing hidden files without root access

Many users mistakenly believe that to view any files you need Root. This is not entirely true. There is a category of hidden files (starting with a dot) that are created by applications to store settings and can be seen without root privileges. To do this, just activate the appropriate option in any modern file manager.

Let's consider the process using the example of a popular file manager. You need to go to the settings of the File Explorer app itself and find the “Show hidden files” switch. After activation, folders like/storage/emulated/0). The .thumbnails folder stores gallery thumbnails and can grow to several gigabytes; its contents can be safely deleted. .android, .cache or .thumbnails.

However, it is worth remembering the boundaries of what is permitted. Without root access, you will not be able to access system partitions, such as /system or /data. You are only limited by user space. This is enough to clear the messenger cache or search for lost documents, but not enough for system modification.

• 📂 Open your file manager (for example, Files by Google or Solid Explorer).
• ⚙️ Go to the application settings menu (usually three dots or a hamburger menu).
• 👁️ Activate the toggle switch “Show hidden files” or “Show hidden files”.
• 📁 Return to the root of the memory and find folders starting with a dot.

This method is safe and does not require complex device preparation. It is ideal for ordinary users who want to put things in order in documents or find hidden folders from remote applications.

Obtaining root access for full access

To fully manage system files, edit or delete them, you need to obtain superuser rights (Root). This procedure unlocks access to all partitions of the file system, including protected ones. The most popular tool for this is Magiskwhich allows you to modify the system without changing the system partition (systemless root).

The process of obtaining root access varies depending on the smartphone manufacturer and processor model. There is no universal instruction, but the general algorithm involves unlocking the bootloader (Bootloader). On devices Xiaomi or Huawei this requires waiting from the manufacturer, while on Pixel or OnePlus the process takes several minutes.

⚠️ Attention: Unlocking the bootloader and obtaining root access will be revoked manufacturer's warranty and may make it impossible to use banking applications without additional configuration.

After successfully installing superuser rights, file managers that support this function (for example, Root Explorer or Solid Explorer) will ask for access permission when launched. granting this permission will open access to the root of the file system (/).

It is important to understand the responsibility. With root access, you may accidentally delete a file needed to run the interface. Therefore, before any manipulations, it is recommended to make a full backup of your data using TWRP Recovery or similar tools.

Using ADB to access the system

An alternative to installing root access is to use the toolkit ADB (Android Debug Bridge). This method allows you to interact with the file system through your computer using the command line. It does not give full root access (if the device is not rooted), but it allows accessing certain directories and executing commands that are not available through the interface.

To get started, you need to enable “Developer Mode” on your smartphone. To do this, go to Settings → About phone and quickly click on the build number seven times. Then, in the “For Developers” menu that appears, the “USB Debugging” item is activated.

adb shell
ls /system/bin
pull /data/local/tmp/config.txt

These commands allow you to go to the device shell, the contents of the system bin folder and copy the configuration file to your computer. ADB is a powerful tool for diagnostics and collecting logs when visual access is limited.

• 💻 Install SDK Platform Tools on your computer (official package from Google).
• 🔌 Connect your smartphone with a cable and confirm the key fingerprint on the screen.
• ⌨️ Enter command adb devices to check the connection.
• 📂 Use the command adb pull to copy files from the phone.

The ADB method is often used by application developers and advanced enthusiasts to extract databases or crashes logs without the need for modification firmware.

The best file managers with root access

Choosing the right tool is critical for comfortable work. Standard explorers built into the shell MIUI or OneUIoften hide the functionality of working with system files, even if you have root. Therefore, installing a specialized application is the first step.

Remains one of the market leaders. Solid Explorer. It has a modern interface in Material Design style and supports plugins for working with root. When you first launch the application, it detects superuser rights and will offer to activate the advanced mode.

Why is Total Commander still popular?

Despite the outdated interface, Total Commander remains one of the most stable file managers with support for plugins and work via FTP/SFTP, which is indispensable for system administrators.

Another great option is MT Manager. This is a powerful tool that focuses on modifying APKs and system files rather than simply copying them. It allows you to edit binary files and xml configurations directly on the device.

When choosing a manager, pay attention to the presence of a backup function before editing. A good application will always offer to save the original file before making changes to the system partition.

Data security and backup

Working with system files is always a risk. Even experienced users can make mistakes. So rule number one: never edit files directly. Always create a copy, make changes to it, and only after making sure it works, replace the original.

To back up partitions, it is best to use a custom recovery, for example TWRP. It allows you to create a complete image (backup) of System, Data and Bootpartitions. In case of unsuccessful modification, the restoration will take a couple of minutes.

⚠️ Attention: Interfaces and names of menu items may differ depending on the version of Android and the manufacturer's shell. Always check the current documentation for your model.

It is also worth mentioning data security. The files in the /data/data section contain sensitive information, including authorization tokens and passwords. Giving access to them to third-party applications can be dangerous.

Following these simple rules will allow you to explore the Android file system without fear of losing data or disrupting the operation of the device. A systematic approach and caution are the best friends of a system administrator.

Frequently asked questions (FAQ)

Is it possible to view system files without installing applications?

Technically, not using standard means. You will need at least a basic file manager. However, if you have USB debugging enabled, you can use ADB commands from your computer without installing additional software on the phone itself.

Deleting which system folder will definitely kill the phone?

Folders /system/bin, /system/lib and file build.propare critical. Deleting or damaging them will result in the system being unable to boot (bootloop), and a flashing will be required.

Why are files with the .odex extension needed?

Files .odex (Optimized Dalvik Executable) contain optimized application code to speed up their launch. They are created automatically by the system, and it makes no sense to touch them manually if you are not engaged in deep optimization of the firmware.

Is it safe to use Root Explorer on Android 13-14?

On new versions of Android, classic methods of obtaining root through simple exploits do not work. You will need to unlock the bootloader and use Magisk. Without this, no file manager will have access to system partitions.