automatically?? Well you might be using same wallpaper for a long time and
don’t have time to change into it from web or camera roll every day. So a brand
new tweak is available in Cydia by CP Digital Darkroom known as EarthView Walls that automatically sets new wallpaper on your iPhone
action to set random wallpaper from Google’s Earth view images both on
LockScreen as well as HomeScreen of your iPhone, iPad and iPod touch. In addition to that it also allows has the
option to change wallpaper daily to get refreshed wallpaper every day.
options are configurable via the settings app.
option for choosing whether the wallpaper should be set for the Home screen,
Lock screen or both. After you’re done just assigned the Activator gesture to
change the wallpaper whenever you want.
Cydia via BigBoss repo and is compatible with iOS 8 and iOS 9.
then follow this simple steps on How to jailbreak iOS 9, 9.0.2 and 9.1