I have created a simple tool which provides you access to samsung's hidden settings to change lockscreen wallpaper with multiple images. Doesn't requires root or any permission. Open the app and press the add icon and select the images from Gallery and finally click Set as wallpaper button at the very bottom of the settings screen. You're done. The lockscreen will show a different wallpaper that you picked each time when the screen turns on.
PRESS THANKS
PRESS THANKS
