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To lock the phone screen
If your phone remains inactive for a period of time, it will automatically
lock the screen and enter sleep mode to save power. Go to Settings >
Display > Sleep and select a screen timeout period.
You can also manually lock the screen by pressing the Power key once.
Swipe to unlock the screen
Press the Power key once to light up the screen. Swipe up the screen to
unlock the screen.
Swipe up to unlock the
screen.
Enter a password to unlock the screen
Once the screen is turned on, swipe up the screen to display the password
input panel. Then enter your lock screen password.
Use pattern unlock
Draw the same pattern you have set to unlock the screen.