Choosing wallpaper is a neat way to dress up the iPhone according to your taste. You can sample the pretty patterns and designs that Apple has already chosen for you by tapping the thumbnails shown. But stunning as they are, these images may not hold a candle to the masterpieces in your own photo albums.
After making a selection, tap the image, and then tap Set. You can set wallpaper for the Home screen, the Lock screen, or both by tapping the appropriate button. The Home and Lock screens can have the same or different images.