WLPPR iphone app lets you download breathtaking satellite imagery of Earth to use as your iphone wallpaper.
Taken from NASA, Yandex and ESA, the images feature the stunning patterns of oceans, desserts, mountains, and landmasses. The app is currently only available for iPhones, and can be downloaded here. Take a look at iPhone wallpapers collection.
You can download wallpapers for iPhone 5, iPhone 6, and iPhone 6s plus.