It’s comprised of system files, caches, Siri voices (if you’ve downloaded other voices), logs, updates, and so much more. The Other category is big and varied, because it’s a real catch-all category. You can scroll all the way down to the bottom of the app list to see how much space “System” and “Other” are taking up. It’s common for Other to be in the 5-10GB range, but if it’s way over 10GB, it has probably grown out of control.
Your iPhone Storage menu will divide that bar up top into familiar categories like Apps, Media, Photos, and Mail, but also an Other category that is sometimes very large. Even after the chart first appears, you’ll want to wait several seconds more for it to stabilize, as the app list and storage sizes can change while your phone completes its analysis. It may take several seconds for your iPhone to show the graph, as it takes time to scan and analyze its storage. You’ll find your iPhone storage details a few layers deep in the Settings app.
