Setting up a lock on your device will help keep your information secure. A screen lock will prevent others from getting into your device unless they have the necessary credentials. If your device is requesting a PUK code, you need to contact your carrier to unlock your device. Removing your security lock will allow anyone the ability to unlock your device.
1.
From the Home screen, drag down the Notification panel.
2.
Tap the Settings icon.
3.
Tap Lock screen and security.
4.
Tap Screen lock type.
5.
Tap a screen lock option and follow the prompts.
6.
You've completed the steps!
1.
From the Home screen, drag down the Notification panel.