Lock the device screen, set and change security lock, and locate device.
INSTRUCTIONS & INFO
To lock your device screen, press the Power key.
To unlock your device screen, press the Power key.
Touch and drag upward to unlock. Note: To set up a security pin or pattern lock, swipe down from the top of the screen, and then tap Security > Screen lock > Select the desired screen lock option and set up the screen lock. Tap Lock phone after, then specify the idle time before the screen is locked. To learn about requesting a device unlock for your AT&T mobile device, visit www.att.com/deviceunlock.