I have never posted with an iPhone question and I couldn't find anything about this when I searched, so if it is something really easy and obvious, give me a newbie break. I haven't synced my iPhone 6+ in a really long time and at today's sync, there is 53 gb of "other" in the bar that displays how many gb something is using - the color showing is yellow. It is 128 and I have 25 gb of music, 890 mb of music (also yellow but a very thin line of it), five gb of photos, which is a pink line, 7 gb of apps which is light green, 2 gb of documents, which is a darker green, and the rest is yellow - "other." What is this and how is it using so much memory? Thanks.