After taking a picture, assign it as a picture ID for a Contacts entry or as the background image (wallpaper) for your Home screen or Lock screen.
Tap the Home Button > the Apps icon > Gallery .
Tap an album and tap an image to view it.
With the picture displayed, tap the Menu icon > Set image as.
Select an option.
Contact photo assigns the picture to a Contact entry as a picture ID. Tap an entry from Contacts, crop the image, then tap DONE to assign the picture.
Home screen assigns the picture as the background image. Crop the image and tap DONE to assign the picture.
Wallpaper assigns the picture as the background image. Tap SET WALLPAPER to assign the picture.
Lock screen wallpaper assigns the picture as the background image for your Lock screen. Crop the image, then tap DONE to assign the picture.