Apple iPhone 8 64Gb/256Gb
iPhone has some of its storage space occupied by iOS and its core applications. On our iPhone 7 Plus running the iOS 11 beta, we have almost 3.7GB taken up by the OS and a few hundred megabytes dedicated to native apps like Safari, Music, and Maps. These numbers will vary from one device to another, but for simplicity’s sake, we’ll assume that a 64GB iPhone has 60GB at the user’s disposal.
Apple’s own iLife suite (including GarageBand for making music and iMovie for editing video) consumes about 2GB of storage, and iWork (including office apps: Pages, Keynote, and Numbers) requires an additional 1.3GB. These are all optional apps, of course, but are all nice having.