I currently have over 59GBs of music, 7GBs of pictures, and about 5GBs in apps, all adding up to about 71GBs of total data. I have the 128GB model, which has around 114GBs of available storage out of the box. So assuming my calculations are correct, I should only have about 43GBs of available storage remaining. However, when I go under General > Usage, it shows that I have 83.8GBs of available storage remaining. Then, I go under General > Usage > Manage Storage and I see that I really have used about 71GBs of memory. What's going on?