I backed up my iPhone 6 to iTunes today (I am running PB1) to try to restore it (hoping to work out a few bugs) and iTunes says that "other" is using approximately 21.5 gigs (out of 128 gigs) of space. What exactly is "other"? Does that seem a bit too high? I do not remember it being that high when I was on 8.4. Anyone have any suggestion? Thanks!