I hope that I can "borrow" / reuse this thread for my problem that is similar and has same subject.
According to iTunes 12.0.1.26 in Yosemite, so have my iPhone 25,2 GB free. When used for other (850 MB and I do not really know what it is. It is the size of the iOS?), 78, 2 MB of pictures and 655,1 MB to Sound. Go into the phone, then I have iOS 8.0.2 only 23.5 GB of available and use 3.3 GB. During storage so I have 1.3 GB under music, 252 MB of images, 160 MB for Safari, 7 MB for Mail and around 3 MB on both calendar and contacts. Why do I see different information? I know before I reset from scratch because I wanted to get the Wifi to work so had synken as much as 3 GB under miscellaneous. Thanks in advance!