Or squeeze the power and volume buttons for a couple of seconds. It’s good to practice both these gestures so that they become reflex, rather than trying to remember them when they’re needed.
Or squeeze the power and volume buttons for a couple of seconds. It’s good to practice both these gestures so that they become reflex, rather than trying to remember them when they’re needed.
Sad, neither of those works on Android. Pressing the power button activates the emergency call screen with a countdown to call emergency services, and power + volume either just takes a screenshot or enables vibrations/haptics depending on which volume button you press.
On Pixel phones, Power + Volume Up retrieves a menu where you can select "Lockdown".
Not on my Pixel phone, that just sets it to vibrate instead of ring. Holding down the power button retrieves a menu where you can select "Lockdown".
On my 9 you get a setting to choose if holding Power gets you the power menu or activates the assistant (I think it defaulted to assistant? I have it set to the power menu because I don't really ever use the assistant.)
Yes, that was the default for me, but I changed it in settings.
Did you check your phone settings? Mine has an option to add it to the power menu, so you get to it by whichever method you use to do that (which itself is sad that phones are starting to differ in what the power key does).
Oh wow, just going into the "should I shutdown" menu also goes into pre-boot lock state? I didn't know that.
It doesn't reenter a BFU state, but it requires a passcode for the next unlock.
It's close enough, because (most of) the encryption keys are wiped from memory every time the device is locked, and this action makes the secure enclave require PIN authentication to release them again.
> It's close enough
Not really, because tools like Cellbrite are more limited with BFU, hence the manual informing LEO to keep (locked) devices charged, amd the countermeasures being iOS forcefully rebooting devices that have been locked for too long.
There is a way now to force BFU from a phone that is turned on, I can't remember the sequence
It’s called restarting the phone.
I believe doing the standard Restart everyone knows is not enough though. The instructions saw were these
Quick-press Volume Up, then Quick-press Volume Down. Hold the side power button until the screen turns black (approx. 10 seconds). Immediately hold both the side button and the Volume Down button for 5 seconds. Release the side button but continue holding the Volume Down button for another 10 seconds. The screen will remain black. If the Apple logo appears, the side button was held too long, and the process must be repeated.
That’s DFU mode. We are talking about BFU in this thread.
Eh? BFU ("before first unlock") is, by definition, the state that a phone is in when it is turned on. There's no need to "force" it.
If you mean forcing an iOS device out of BFU, that's impossible. The device's storage is encrypted using a key derived from the user's passcode. That key is only available once the user has unlocked the device once, using their passcode.