[potatolicious]

Like others have brought up - it isn't a security issue. Since iOS 8 MAC addresses have been randomized until the phone connects to the AP. Your real MAC is not exposed to random listening APs nearby.

It's been 3 years since your phone has been giving up its real identity while simply walking around.

There may be good reason to want your WiFi radio off (battery?), but the cited privacy issue has been solved on iOS for several years already.

[et-al]

Unfortunately multiple people here, and study posted today[0], have pointed out that MAC address randomization in iOS is still flawed.

[0] https://news.ycombinator.com/item?id=15287100

[ronnier]

And remember the wifi hack?

https://www.wired.com/story/broadpwn-wi-fi-vulnerability-ios...

For that reason, I keep my wifi off as much as possible.

[blub]

Your reply seems a bit out of touch, considering the recently discovered and fixed vulnerabilities in the bt and Wi-Fi stacks of iPhones.