Knock feature, hah. What a joke. It's no where to be found, no where. Have you been bribed by apple to ignore android users?
Not to mention the feature we were promised was a "secret" knock that we would program to be recognized by the lock device when the door was knocked. Not some bullshit 'hit your phone' crap. But a real knock feature that doesn't require the device or require both Bluetooth and location services, both battery eaters, to be on.
Get off your asses candyhouse and give us what you promised and sold us on.