Smart Lock automatically unlocks the device when trusted locations (work, home) or other devices (Bluetooth® headset, NFC tag) have been detected.
A secure lock type (PIN, pattern, etc.) must be configurar for Smart Lock to be available.
From a Home screen, swipe up then navigate: Settings > Lock screen.
Tap Smart Lock.
Draw the current pattern or enter the current password or PIN to confirm.
Select any of the following options then follow the on-screen instructions to set up a trusted unlock:
For more info on Smart Lock (e.g., editing, removing settings, etc.), refer to the Google support page.
Available options vary by device.
Trusted devices: Set Bluetooth or NFC devices to keep your phone unlocked when that device is connected.
Trusted places: Set locations (home, work, etc.) to keep your phone unlocked whenever you're there.
Trusted voice: Keeps your phone unlocked using voice recognition.
On-body detection: Keeps your phone unlocked while you're carrying it on you (pocket, purse, etc.).