Oh, isn't that a security feature, too? I don't even know how you can turn off your locked phone without unlocking first. Holding power button at the lock screen?
I know there's a soft reset by holding down volume down + power button for 10 or so seconds. That doesn't prompt for a passcode, I don't think.
Yep, if you just pick up your phone and press the power button. I'd check on my phone, but I'd have to turn off smart unlock first and I can't be bothered.