What is dnsmasq on a Xiaomi phone and how to turn it off

Users of Xiaomi, Redmi and POCO smartphones, looking at the statistics of power consumption or running processes, often find there an unknown process called dnsmasq. This name is alarming, especially if the process consumes a significant amount of battery power or takes up space in RAM. Many immediately look for ways to remove it, believing that they have encountered a virus or a system error.

In fact, dnsmasq is a legitimate and important component of the Android operating system, which is responsible for network connections. It acts as a local server that processes domain name requests (DNS) dispensing IP-address (DHCP) Understanding its functions will help to avoid rash actions that can disrupt the operation of the smartphone.

In this article, we will discuss in detail why this process can behave aggressively, how to distinguish system service from malware, and what methods can be safely limited or completely disable if this is urgently needed.

Purpose and functions of dnsmasq process in Android

The dnsmasq process is a lightweight server that is integrated into the Android core to speed up network interfaces. DNS-When you open a website or app, the phone sends a request to convert a domain name (such as google.com) into a domain name. IP-dnsmasq stores these addresses locally so that when you re-refer to them, you do not waste time on an external request, which significantly speeds up the loading of pages.

This component is also responsible for the operation of the protocol. DHCP (Dynamic Host Configuration Protocol: If you use your Xiaomi smartphone as a Wi-Fi hotspot (distribute the Internet to a laptop or tablet), it is dnsmasq that assigns connected devices. IP-And without that, you can't distribute Wi-Fi without that.

It is important to understand that the process is not part of the proprietary shell of MIUI or HyperOS, but belongs to the base layer of Android.It starts automatically when Wi-Fi or mobile data is turned on and runs in the background, waiting for network requests from applications.

⚠️ Warning: Attempt to forcibly stop the dnsmasq system process without root rights or special tools ADB The Android system can automatically restart the service after a few seconds.

There is a common misconception that high battery consumption by this process always indicates a problem. In reality, heavy use of the Internet, especially through a 4G/5G mobile network with an unstable signal, makes dnsmasq work harder, constantly reconnecting and caching new data.

Why dnsmasq is loading battery and processor on Xiaomi

If you notice that dnsmasq consumes a disproportionate amount of power, it can be caused by several factors, most often the problem is cyclic behavior: the application or system is constantly trying to establish a connection, fails, and the dnsmasq process over and over again initiates a request without receiving a response, this puts a strain on the processor and the radio module.

Another reason may be conflicting settings. DNS. Users change frequently DNS-servers in Wi-Fi settings or through ad-blocking applications (e.g. AdGuard, PrivateDNS). If the selected server is unavailable or slow, dnsmasq will waste resources on timeouts and repeated attempts to connect.

Also worth considering is the impact of third-party apps, some programs to save traffic or VPN-Customers can intercept network requests, creating a conflict with the system dnsmasq. As a result, the Xiaomi processor is forced to process duplicate requests, leading to heating and discharge.

You can use built-in developer tools or third-party monitors to diagnose the situation.

• 📉 Dramatic drop in battery power even in standby mode with Wi-Fi on.
• 🔥 Heating the top of the smartphone, where the antenna module is located.
• 🌐 Periodic Internet interruptions or inability to connect to a known network.
• 📱 Slowed operation of the interface due to high load CPU network-challenges.

Methods of disabling dnsmasq via ADB (No Root)

The safest and most efficient way to manage system processes on Xiaomi without obtaining superuser rights is to use the ADB (Android Debug Bridge) debugging bridge, which allows you to temporarily disable the component or change its parameters without violating the integrity of the system partition.

To start, activate the developer mode on your device. Go to Settings → About Phone and quickly press 7 times on the MIUI Version (or OS Version). After that, a new section Additional → For Developers will appear in the settings menu.

Turn on the USB Debugging Toggler. Then connect the phone to your computer with a cable. The computer must have Xiaomi drivers and the ADB platform installed. Open the command line or terminal in the ADB folder and enter a command to check the connection:

adb devices

You'll see a debugging permission request on your smartphone screen, confirm it. If the terminal displays the serial number of the device, the connection is set. You can now run a command to disable the service. Note that you can't completely delete it without root rights, but you can disable the component:

adb shell pm disable-user --user 0 com.android.dnsmasq

However, in modern versions of Android, the package is often called differently or is part of the system library. A more universal approach is to reset the network settings, which effectively restarts the dnsmasq configuration. If the goal is to stop the process right now, you can use the command:

adb shell stop dnsmasq

The stop command is valid only until the system restarts service or the phone is restarted.

Set up Private DNS to optimize your work

Often the problem of high activity of dnsmasq is solved not by its disconnection, but by competent settings. DNS-servers. 9 and newer (and also in MIUI 12/13/14) Private function DNS (Private DNS), coder DNS-requests and can unload local processing.

Go to Settings → Connection and Sharing → Private DNS. The default mode is Auto. Switching to a specific provider can stabilize the connection. It is recommended to use reliable servers such as Cloudflare or Google, which have excellent infrastructure and respond quickly to queries.

In the “DNS Host Name” field (or similar), enter the address of the selected service. For example, for Cloudflare, this is:

dns.cloudflare.com

Or for Google:

dns.google

Using Private DNS shifts some of the name resolution work to remote servers using a secure DoT (DNS over TLS) connection, which can reduce the load on local dnsmasq, as it has less cache and re-query work to do.

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If the Internet is lost after entering the Private DNS address, then the server is unavailable or blocked by the provider. Return the setting to Auto or Disconnected mode.

Resetting network settings as a solution to problems

If dnsmasq continues to cause failures, the most effective software method is to completely reset network settings, which clears the DNS cache, resets the DHCP configuration, and removes stored Wi-Fi profiles, often eliminating software conflicts.

You can reset via Xiaomi’s Settings menu.The path may vary slightly depending on the shell version, but it’s usually in the section: Settings → Connection & Sharing → Reset Wi-Fi, mobile networks and Bluetooth.

Press Reset button at the bottom of the screen. The system will request confirmation of the action (enter a password or a pattern lock). After the procedure, the phone will restart the network modules. You will need to re-enter the passwords from the Wi-Fi networks.

This method is safe for personal data (photos, contacts, apps will not be affected), but will return all network settings to factory values, ensuring that there are no erroneous records or “junk” accumulated during use in the dnsmasq configuration.

⚠️ Attention: After resetting the network settings, Bluetooth devices (watches, headphones) may be turned off. You will have to re-do the procedure for pairing them with your phone.

Security Analysis: A Virus or a System File?

Security issues often come up when users see an unknown process name. dnsmasq is open source, widely used in Linux and Android. It is not a virus in itself. However, malware can disguise itself as system processes.

How to distinguish the original file from a fake? Real dnsmasq on Xiaomi resides in the system partition and has a digital signature from Google or the manufacturer. Viruses are usually in the user folders or have strange names with typos (for example, dnsmasq_service instead of dnsmasq).

If you suspect an infection, check the device with an antivirus, such as Google Play Protect or specialized applications like Malwarebytes. Also pay attention to the behavior of the phone: advertising in unexpected places, pop-ups and unknown applications are signs of infection, not dnsmasq.

In rare cases, miners or Trojans can use network functions to communicate with the command center, loading the process.If after resetting the settings and checking with antivirus, the problem persists, it is worth considering resetting the phone to factory settings.

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dnsmasq is a critical system component for the Internet, and its high power consumption is more likely to indicate a bad signal or application conflict than a virus.