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Everyday Privacy

Private Wi-Fi Address: What It Is and When to Turn It Off

Every Wi-Fi device has a hardware address. If it stays the same, every network you join can recognize your device. A private Wi-Fi address changes it per network.

Last updated October 18, 2026 · By Harbor Privacy

What It Is

Your phone has a hardware (MAC) address that identifies it on a network. Hotels, stores, and public hotspots can log it to recognize you each time you return, or to link your visits. A private address gives your phone a different, random address for each network, so it cannot be tracked across them.

How to Check or Change It

01
iPhoneOpen Settings, Wi-Fi, tap the info button next to a network, and look for Private Wi-Fi Address. Set it to Fixed or Rotating.
02
AndroidOpen the network's settings and look for Privacy, then use randomized MAC. It is usually on by default for new networks.
03
WindowsIn Network settings, use Random hardware addresses for a connection.

When to Turn It Off

  • Your home router uses a MAC filter that only allows known devices.
  • Parental controls or device names are tied to the hardware address.
  • A hotel or office network needs to register your device.
  • A fixed address is required for a static IP or a device list.

Turn it off for that one network only and leave it on elsewhere.

What It Does Not Do

It does not hide your IP address or encrypt your traffic. A network can still see what you do on it. Use a VPN for that. See public Wi-Fi safety and how to hide your IP.

Related guides: Public Wi-Fi safety, Travel privacy, Hide your IP address.

Common Questions

Is a private Wi-Fi address on by default?
On recent iPhones and Androids, yes for most networks. Check the setting on each network.
Why can I not connect after turning it on?
The network may filter by MAC address. Turn it off for that network.
Does it stop tracking completely?
No. It only prevents tracking by hardware address. Accounts, cookies, and your IP can still identify you.
What is the difference between Fixed and Rotating on iPhone?
Fixed keeps one private address per network. Rotating changes it periodically for extra privacy.
Does it affect my speed?
No.
PROTECT YOUR TRAFFIC ON ANY WI-FI

Harbor VPN encrypts everything on public networks. See Harbor VPN.

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