Secure My Device
Which device do you want help with?
Secure My Device
Learn how to secure your device.
INSTRUCTIONS & INFO
To learn more about requesting a device unlock for your AT&T mobile device so that it can operate on another compatible wireless network, visit www.att.com/deviceunlock. If your device is locked and is requesting a "PUK" code, click here for instructions on how to obtain your PUK or PUK2 code to unlock your SIM card.
In this tutorial, you will learn how to:
• Set a security lock
• Change lock type
• Change lock screen timeout
• Set Lockdown mode
• Lock and unlock device
Set a security lock
1. Swipe down from the Notification bar, then select the 
Settings icon.
2. Select Lock screen, then select Screen lock type.
Settings icon. 2. Select Lock screen, then select Screen lock type.
3. Select the desired screen lock type and follow the prompts to complete set up.
Note: To set up a biometric screen lock, select the desired switch and follow the prompts to complete set up.
Note: To set up a biometric screen lock, select the desired switch and follow the prompts to complete set up.
4. Edit Lock screen notification settings as desired, then select Done.
Change lock type
From the Lock screen screen, select Screen lock type > enter your current screen lock > select the new desired screen lock type and follow prompts to complete set up.
Change lock screen timeout
1. From the Lock screen screen, select Secure lock settings.
Note: If you have a screen lock set up, you will be prompted to enter your screen lock to continue.
Note: If you have a screen lock set up, you will be prompted to enter your screen lock to continue.
2. Select Lock automatically, then select the desired timer duration.
Set Lockdown mode
ENABLE: Lockdown mode turns off Smart Lock, biometrics unlock and notifications on the Lock screen. From the Secure lock settings screen, select the Show Lockdown option switch. 
ACCESS: Press and hold the Power/Lock button, then select Lockdown mode. 
Lock and unlock device
• LOG IN USING THE SECURITY LOCK: To use face recognition, raise your phone in front of your face to unlock your device. To unlock your phone using your fingerprint, place your finger on the fingerprint sensor. To use your backup screen lock, from the lock screen swipe up from the bottom of the screen then enter your backup screen lock.
• LOCK DEVICE: Press the Power/Lock button located on the right side of the device.