LG D950G Guide De L'utilisateur page 84

Function
QuickTheater
QuickTheater allows you to see the slideshow for Photos, Videos, and YouTube.
1
From the lock screen, hold the phone horizontally.
2
Pull the screen with the thumb of both hands.
3
You can see the slideshow for desired functions.
NOTE: The screen lock mode should be set as Swipe before you use
QuickTheater function.
1 Tap
>
Select screen lock.
2 Select Swipe.
82
Apps tab > Settings > Display tab > Lock screen >