So I have tried a handful of different searches and haven't really found anything satisfactory so I figure I would just ask the question myself: I have a 32gb iPhone 4 which iTunes is telling me I have a total capacity of 28.5gb. I don't have any space marked for reserving as disk space or anything that I have been able to find. What account for this and if possible how do I regain my full space back? I have had the phone for about 10 months. The only two things I can think I would be is either hidden compressed files of things like archived text message conversations and other such items, OR the fact that memory degrades with time period. Any helpful insight/thoughts would be very much appreciated.