I have a 12GB iPhone SE. When I go into storage, iit tells my 11.5GB have been used up, however the data below shows I have only used approx. 2.5GB. Where has all my storage gone, and how can I get it back again?
There is not much that you can do about it, other than rebooting, logging out of iCloud and the App Store and restoring the device. With a bit of luck, this resolves itself with the next update in a few weeks, as Apple switches to a new file system.