Why can't I connect a passcode locked iPhone to wifi?

[davidg4781]

I just thought of this, Googled, and can't find a reason why.

So I work at a grocery store. We'll get phones turned in as lost/found. Both iOS and Android. They usually have a lock on them and cellular service but many times, no cellular service.

I'd like to connect them to our wifi in the hopes the owner will be able to ping it but we're not able to do that. But why not? Is it a security risk?

 

[MikeX]

because keychain is encrypted when phone is locked, so you can't just dump the memory and get access to everything.

wifi password is stored on the keychain which phone can't access when password is needed.

 

[davidg4781]

because keychain is encrypted when phone is locked, so you can't just dump the memory and get access to everything.

wifi password is stored on the keychain which phone can't access when password is needed.

Why couldn't it let me join a public wifi then? Like at McDonald's or the grocery store?

 

[arw]

It would only work if the phone has previously been connected to said WiFi network.
You cannot add a new WiFi network or connect to it without unlocking the phone first.
I guess it makes sense from a security perspective. Your scenario is a niche one - although it is a great idea!
Can Find My work via Bluetooth only on an iPhone like it does on AirTags?
If so, a different, working iPhone could act as a relay to the internet.

edit: It can work, if activated: