How to open and edit hosts on Android

The file hosts is a system mechanism that associates domain names with IP addresses even before the request is sent to the ISP's DNS server. On mobile devices running Android this file performs the same fundamental role as on desktop computers, allowing you to redirect traffic or block unwanted connections at the operating system level.

Often users are faced with the need to make changes to this file to block ads, access blocked resources, or disable application telemetry. However, standard settings Android hide this file from direct access, protecting the integrity of the system from accidental changes. In this article we will analyze all the available ways to open hostsusing both superuser rights and workarounds for ordinary devices.

Location and purpose of the system file

In the architecture Linuxon which it is built Android, the configuration file is located in a strictly defined directory. The path to it is always unchanged: /system/etc/hosts. This is where the correspondence table is stored, which is processed by the system kernel in priority order before any external DNS request.

The main purpose of using this file on a smartphone is local management of network traffic. You can force a request to a specific site to be redirected to a local address 127.0.0.1, thereby completely blocking access to it for any application on the device. This is often used to combat intrusive advertising in free games or to prevent applications from collecting data.

It is worth noting that by default this directory is read-only. The operating system mounts the partition /system in ro (read-only) mode, which prevents any data from being written without obtaining special privileges. An attempt to edit a file with a regular text editor without rights Root will result in a saving error.

⚠️ Attention: The system partition is write-protected for a reason. Incorrect editing of the file hosts can lead to the device losing the ability to connect to the Internet or certain system services stop working correctly.

Why is the hosts file empty by default?

In modern versions of Android, the hosts file is often almost empty, since the main burden of name resolution falls on DNS-over-HTTPS and operator network settings. An empty file means that the system relies on standard DNS servers obtained through DHCP or static Wi-Fi settings.

Method No. 1: Editing via root access

The most reliable and direct method of changing system entries is to use superuser rights. If your device has already been completed rooting (Root access has been obtained), the process takes just a few minutes and does not require connecting to a computer.

First, you will need a specialized file manager that supports working with system partitions. Applications such as Root Explorer, Solid Explorer or MT Managerare great. After launching the application, you need to grant it superuser rights through the pop-up window Magisk or SuperSU.

Next you should follow the path /system/etc/. In this folder you will see a file hosts. It is extremely important to back it up before editing. Just copy the file and paste it into the same folder named hosts.bak. This will allow you to quickly restore the network in case of an error.

• 📂 Open the file through the built-in text editor of the file manager.
• ✏️ Enter the necessary lines in the format: IP_address domain_name.
• 💾 Save the changes, making sure that the access rights remain the same (usually 644).
• 🔄 Reboot the device to apply the new routing rules.

Remember that after writing the file, the access rights may be reset. Make sure that the file remains readable by all users, otherwise network services may not start correctly when the system starts.

Method No. 2: Using ADB without root access

If you do not want to root your smartphone, but it is critical for you to change the hosts, you can use the tool ADB (Android Debug Bridge) from your computer This method allows you to replace the system file at the session level or use specific commands for. records, if the system section allows it in your firmware version.

First you need to activate the developer mode on the phone. Go to Settings → About phone and quickly click 7 times on the item Build number. After that, a section will appear in the menu For developers, where you need to enable USB debugging.

Connect the smartphone to the PC with a cable and open the command line on the computer Enter the command to test the connection:

adb devices

A request for debugging permission will appear on the phone screen - confirm it. Now we can try to copy the modified hosts file from the computer to the device. Create a text file on the PC, name it hosts and fill it with the necessary entries.

To replace a file in a system without root access, the method of mounting a partition in write mode or replacing the file through a temporary directory and then rebooting is often used, but on modern ones versions Android 10-14 this may not work due to enhanced protection SELinux. In this case, ADB will only help you view the contents:

adb shell cat /system/etc/hosts

ADB command	Purpose	Requires Root
adb pull /system/etc/hosts	Copying a file to PC	No
adb push hosts /system/etc/	Downloading a file to the device	Yes (usually)
adb shell reboot	Restarting the device	No
adb shell ls -l /system/etc	View rights access	No

⚠️ Attention: On devices with an Unlocked Bootloader, some ADB commands can work with extended rights, but on locked devices, writing to /system via ADB without root is almost always impossible.

Using a local VPN to replace hosts

The most modern and secure way to manage traffic to Android without interfering with system files is to use a local VPN tunnel Applications like AdGuard or Blokada create. a virtual network interface through which all device traffic is passed.

Such applications have their own domain databases for blocking, which work on a file principle hosts, but do not require changing system files. You simply add the desired domain to the blacklist inside the application, and it intercepts the request, preventing it from going online.

This method is ideal. for users who are afraid of disrupting the system or do not have superuser rights. The application runs in the background and filters packages on the fly. It is enough to turn on the protection switch in the app interface.

• 🛡️ Does not require root access and unlocking the bootloader.
• ⚡ Allows you to flexibly manage block lists without rebooting.
• 📱 Works on any version of Android from 5.0 to the latest 14/15.

The only disadvantage of this approach is the constant display of the VPN icon in the status bar and a slight increase in battery consumption due to the constant filtering of traffic by the processor.

Frequent editing errors

When manually editing a file hosts users often make syntax errors, due to which the rules do not apply. The most common problem is extra spaces or the absence of a space between the IP address and the domain. name. The line must look strictly defined.

Another mistake is using the wrong IP format. For local blocking, the address is always used 127.0.0.1 or 0.0.0.0. If you specify a non-existent external IP, the request may hang waiting for a response, which will lead to slow loading of pages instead of instant blocking.

It is also worth paying attention to the case of letters. Although DNS is not case sensitive, some parsers in older versions of Android may not correctly handle domains written in all caps. It is recommended to always use lowercase letters for domain names.

Don't forget about the comment symbol #. Everything written after this character in the line is ignored by the system. If you accidentally put # before the IP address, the blocking rule will not work.

⚠️ Attention: Settings interfaces and methods for accessing system files may differ depending on the version of Android and the manufacturer's shell (MIUI, OneUI, ColorOS). Always check the paths and capabilities in the documentation for your specific model.

Restoring the original hosts file

If after your changes the phone no longer connects to the network or Errors in the operation of applications began to occur, it is necessary to return the original state of the file. If you made a backup hosts.bak, simply rename it back to hosts, replacing the current file.

If there is no backup, you can create a new empty file or a file with standard content. The standard Android hosts file usually only contains a comment and an entry for localhost. You can create it on your computer and upload it via ADB or a file manager.

Example of minimal content for recovery:

# localhost
127.0.0.1 localhost
::1 localhost

After replacing the file, a complete reboot of the device is required. Simply turning off the screen or reconnecting Wi-Fi is not enough, since the DNS cache and network tables may remain in RAM.

FAQ: Frequently asked questions

Is it possible to open hosts on Android without root access with a regular editor?

No, standard text editors do not have permission to write to the system section /system. Trying to save the file will result in an access error. You must use Root, ADB with special rights, or applications running through a local VPN.

Where exactly is the hosts file on all versions of Android?

The path is always the same: /system/etc/hosts. It does not change from version to version, since this is the standard of the Linux file system on which the operating system is based.

Why does the site still open after editing the hosts?

Perhaps the application uses its own DNS (DNS-over-HTTPS), ignoring the system hosts file. Try disabling "Private DNS" in the network settings or clearing the DNS cache of a specific application.

Is it safe to download ready-made hosts files from the Internet?

Download files only from trusted sources (official blocker repositories). The finished file can be embedded with redirects to phishing sites that will steal your data.

Do you need to restart your phone after each change?

Yes, to ensure that the changes are applied and the DNS cache is reset, it is recommended to completely reboot the device. In some cases, turning on and off the "In Flight" mode helps.