Facebook mobile save photo It is very easy to save Photos in the iPhone app of Facebook.  All you have to do is tap hold on a photo your looking at and you will see a menu come up from the bottom with option to “Save Photo”.  I Believe this also applies to android devices but I have only tested it on iOS 7.    Saving a friends photo onto your iPhone is as easy as touch holding the photo you want to save and tapping Save Photo.