Use the home wallpaper, or use any photo you've taken with the camera as the lock screen wallpaper. 
	 
 
  
 
	 -  
		  From the 
				Home screen, tap 
				. 
			  
		
-  
		  Under 
			 Lock screen, tap 
			 Change wallpaper. 
		   
		
-  
		  In the pop-up menu, tap 
			 Use home screen wallpaper or tap 
			 Use custom wallpaper to select a photo from 
			 Gallery.