I have a 16gb iPad with 12.4gb usable storage space (so 3.6gb is used for system files). If I go to settings>general>usage and add up the space taken for all my apps then it adds up to about 4gb. But available free space on my iPad is just 1.2gb. That just doesn't add up. 4+3.6=7.6gb and subtracted from 16gb I should still have 8.4gb left. Where is my free space disappearing and how can I find out what's taking up the free space.
Read more: What's taking up space on my iPad?