2 Clear Out Your Photo Library
If you’re like most people, your iPhone probably doubles as your de facto photo library. There’s absolutely nothing wrong with that, but it’s worth it to keep your library clean. You probably don’t need those three hundred “test selfies” that you never bothered to delete.
There’s not really a special trick for clearing out old photos. Just open a library, hit Select and tap the photos you’d like to delete. You can also “swipe” across photos to select several very quickly. When you’re done, just tap the Trash icon. Then, go to Trash, tap Select and then tap Delete All.