Modern wireless networks require precise identification of each connected device to ensure stable data exchange and protection from unauthorized access. MAC address The Media Access Control Address (MAC) is a unique hexadecimal identifier assigned to a network interface at the factory. Understanding how to find this code is essential not only for system administrators but also for regular users wanting to configure device filtering or troubleshoot connection issues with their home router.
Unlike a dynamic IP address, which can change with each reconnection, a physical address is hardcoded into the hardware and remains unchanged unless randomization is enabled. This parameter is often used by providers to authenticate subscribers or by network owners to create "whitelists" of approved clients. Knowing how to obtain this information on various operating systems is becoming a key skill for properly managing a home digital ecosystem.
In this article, we'll take a detailed look at algorithms for finding a unique identifier on smartphones, tablets, computers running various operating systems, and directly in the router interface. We'll cover both standard methods via the graphical interface and advanced command-line methods that allow access to hidden network adapter settings.
What is a MAC address and why is it needed in Wi-Fi?
The physical address is a 48-bit sequence, typically written as six pairs of hexadecimal numbers separated by colons or hyphens. The first three octets of this code are called the OUI (Organizationally Unique Identifier) and identify the manufacturer of the network equipment, for example, Apple, Samsung or IntelThe remaining three octets are the device's unique serial number, which ensures that there are no complete duplicates on the global network.
The main function of this identifier is to address data frames at the data link layer of the OSI model. When you send a request to the internet, the router uses this code to know which specific device on the local network the response packet is intended for. Without the correct MAC addresses Data switching within a single wireless cell would be impossible because packets would simply be lost in the air.
In addition to technical routing, this parameter is actively used for security purposes. Network administrators configure MAC filtering to allow only a predefined list of devices to connect. Internet service providers also often bind the Internet access service to the user's physical network card address, blocking access if it changes.
⚠️ Attention: Modern operating systems implement MAC address randomization to protect privacy. This means a device may use a temporary, random address instead of the factory default when scanning networks, which can make it difficult to identify in the router's client list.
Understanding the difference between a real (burned-in) address and a random (randomized) address is critical when setting up filters. If you block access to a real address and the device uses a random one, it will not be able to connect to the network, even if the password is entered correctly.
Finding MAC Addresses on Android Devices
In the operating system Android The path to the network settings may differ slightly depending on the OS version and the installed manufacturer shell, for example, MIUI or OneUIThe standard algorithm involves going to the section Settings, then to the point About the phone or System, where is the subsection located Status or General informationThis is where the "Wi-Fi MAC address" line is most often displayed.
In newer versions of Android, starting with version 10, Google has strengthened privacy protection by mandating the use of random addresses by default. To see the device's real, unchangeable address, you need to go to Settings → Network and Internet → Wi-Fi, click the gear icon next to your active network, or select "Advanced" in the Wi-Fi menu. You may need to switch the "Use random MAC address" setting to "Device MAC address."
- 📱 Open the Settings menu and find the "About phone" or "System" section.
- 📡 Go to "Status" or "General Information" to view basic data.
- 🔒 Check the settings of your specific Wi-Fi network to see if randomization is used.
- 📝 Write down the 12-digit code if required to register with your provider.
An alternative and often faster method is to use the diagnostic menu. On many smartphones, entering a combination ##4636## In the Phone app, it opens a hidden testing menu where the Wi-Fi Information section displays all technical information, including the physical address of the interface.
⚠️ Attention: Diagnostic menu interface
##4636##may not be available on devices of some brands (e.g. Xiaomi or Huawei) without obtaining superuser rights or installing special activator applications.
How to find the MAC address on iPhone and iPad (iOS)
For ecosystem users Apple Finding the required setting isn't difficult either, even though the company implemented the "Private Wi-Fi Address" feature even earlier than its competitors. By default, iPhones and iPads generate a unique address for each network they connect to to prevent tracking of the owner's movements. To obtain a factory-set, permanent address, you need to perform certain steps in the settings menu.
Go to Settings → Main → About this deviceIn the list of parameters, find the line "Wi-Fi Address." This value is the physical identifier "hardwired" into the communication module. However, if you look at the settings of a specific network (Settings → Wi-Fi → button (i) next to the network), you will see the “Private address” parameter, which will be different from the factory one.
If you're setting up filtering on your router, you'll need the address from the "About this device" section. If you're trying to figure out why the router isn't seeing your iPhone in the list of connected devices, check if the private address option is enabled for that specific network, as that's what the router sees.
- 🍏 Go to the "Settings" menu on the home screen.
- ℹ️ Select "General" and then "About this device".
- 📋 Find the line "Wi-Fi Address" - this is your real MAC.
- 🔐 Disable "Private Address" in the settings for a specific network if you need stable identification.
It's important to note that disabling the private address feature increases your device's vulnerability when connecting to public hotspots in shopping malls or cafes, as your device becomes easily tracked. While this is safe for home networks, caution is advised in public places.