I'm always on the lookout for new and different wallpapers to install on my iPhone and spruce up my homescreen. One excellent collection that I stumbled across (thanks to PetaPixel) is Aerial Wallpapers by João Paulo Bernardes. Bernardes searches through NASA and Airbus Defense and Space archives to find the best satellite photos each agency has to offer.
These overhead images, made available through a creative commons license, paint a unique picture of our planet and look absolutely fantastic on the iPhone homescreen. Convenient for iPhone 6 Plus owners, Bernardes' images are designed for the larger screen, but you can resize them down to accommodate any iPhone screen size.