> Apparently, saying "Hey Siri, whose phone is this?" will disable biometrics as well.

This does not work on 7+, at least. Nor does holding side button + volume up. Pressing the side button 5 times will bring up the emergency screen (just press "cancel" when it shows up) and disable biometrics.

Confirmed both the Hey Siri and Power+Volume tricks do work on an iPhone 8-Plus running iOS 12.2. Wonder if it doesn’t work on older phones, but surprised it’s not tied to iOS version.

also works on 8+ and ios 11

Thanks! I have a 7p and noticed those didn't work. The 5-click method is easy to remember.

For me the Siri trick only works if the phone is already locked.

it's audibly silent -- on post-iPhoneX models, clicking power 5 times will emit a siren tone and then autodial 911 in addition to locking out biometrics.

power + volumeup displays on the screen but does not emit a noise.

I think the police shortcut got nerfed with 12.2, but I'm not sure.

Clicking the power 5 times also gives me a heart attack when I do it accidentally when I'm trying to turn up my podcast.

Good clarification, thanks.

I can't find any immediate results on the Police shortcut no longer working—almost every reference is from Q3 2018.