On Android, check Settings > About phone > Status, or in the Wi-Fi network details. On iPhone, go to Settings > General > About > Wi-Fi Address.
Network & connectivity
MAC Address: Definition & explanation
In a nutshell
A MAC address is a unique, hardware-based identifier assigned to a device's network interface. It consists of 12 hexadecimal characters and is set permanently by the manufacturer.
How does MAC Address work?
A MAC address (Media Access Control) uniquely identifies a device's network hardware at the data link layer (Layer 2) of the OSI model. It consists of six byte pairs in hexadecimal format, such as 00:1A:2B:3C:4D:5E. The first three bytes identify the manufacturer (OUI), the remaining three form the individual device number. Unlike an IP address, a MAC address typically stays constant regardless of which network the device joins. Routers and Wi-Fi access points use MAC addresses to identify devices on the local network, for example for MAC filtering or DHCP reservations. Modern smartphones (iOS and Android) often use randomized MAC addresses during Wi-Fi scans to make tracking by advertisers or public hotspots harder. The real, physical MAC address stays stored on the device and is only used for the actual connection. Technologies like Wi-Fi Direct also rely on MAC addresses for direct device discovery without a router. You can find your own MAC address in the network settings under 'About phone' or 'Wi-Fi details'.
Advantages of MAC Address
- Unique, stable device identification
- Enables MAC filtering on home networks
- Allows DHCP reservations
- Essential for peer-to-peer links like Wi-Fi Direct
Disadvantages of MAC Address
- Can be abused for tracking
- Spoofable, offering weak security alone
- Randomization complicates device management
- No encryption, only identification
Frequently asked questions
The physical MAC address is fixed by the manufacturer and doesn't change. However, modern smartphones often generate a random, temporary MAC address for each new Wi-Fi network to reduce tracking.
A MAC address alone isn't enough to access a device, it only identifies it on the local network. Combined with other vulnerabilities, though, it can be used for tracking or targeted attacks.
Guides with MAC Address
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