Originally Posted by
mark-d I can honestly say I've never fully understood what it's supposed to do as it's behaved in different ways.
Sometimes if my phone is unlocked then my phone unlocks. Sometimes it doesn't. What's really confused me though is that my watch has unlocked before when I've put it on when my phone definitely wasn't unlocked so it's a confusing feature for me
What it's "supposed" to do is wait until you authenticate yourself on your iPhone, either with Touch ID or your passcode. So the state of your iPhone at the time you put your watch on isn't relevant; it will stay locked until you authenticate on your iPhone. That being said I've seen it behave inconsistently. I've definitely never had my watch unlock itself while my iPhone was still locked though.