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by stefan_ 2419 days ago
The MAC randomization only applies to probes it sends for known networks when not connected. Once you are connected, it uses the real MAC.

iPhone also still sends the device name to the DHCP server when requesting an IP, so if you haven't changed it, it is broadcasting "<Your first name>'s iPhone" to the network.

2 comments

> iPhone also still sends the device name to the DHCP server when requesting an IP, so if you haven't changed it, it is broadcasting "<Your first name>'s iPhone" to the network.

Awareness of this is probably going up. Comcast is actually running TV ads that point it out [1].

https://www.youtube.com/watch?v=H45-5Rga1B8

"iPhone also still sends the device name to the DHCP server when requesting an IP, so if you haven't changed it, it is broadcasting "<Your first name>'s iPhone" to the network."

My iphone has no idea what my first (or last) name is, but I still find it irksome that I cannot change my SSID nor can I hide it.

There is no reason I should be advertising the existence of my phone to everyone in (radio) earshot ...