The Media Access Control address on your Apple iPhone is a 12-digit number assigned by the manufacturer to identify it as a specific device on a local area network. Knowing your iPhone's MAC address is useful information if you need to troubleshoot the device's connection to your home or office network. You can find the address with the iPhone's Settings app.
Locate and tap the "Settings" icon on the home screen. It's the gray icon with the design of mechanical gears.
Tap "General" from the list of options. You should find it around half way down the screen. Wait for a new options window to appear.
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Tap the "About" option located near the top of the screen. Scroll through the list of options until you see the "Wi-Fi Address" entry. This 12-digit alphanumeric number is your iPhone's MAC address. You can use that number to connect any network program or device that may need it.