Your iPhone’s wallpaper is arguably one of the most personal things you’ll customize on your handset right out of the box. Having said that, it’s a popular thing even for jailbreakers to customize.
One thing worth staring, however, is that jailbreakers do things a little differently. Rather than using boring motionless wallpaper images, jailbreak tweaks can apply unique effects to your wallpaper images that you simply can’t experience on a stock handset.