I've never used/synced with iTunes. Can't take a screenshot because the memory is all used up. Here are my #'s from the "about" screen: Network: ATT Songs: 0 Video: 78 Photos: 2287 Apps: 26 Capacity: 11.5 gb Avail: 12 mb Version: 9.2.1 I thought it might be the videos/photos, but when...

I'm new to the iPhone world, so let me apologize up front for what I am sure will be a dumb question. I have the 16gb 6s+ and understand that after accounting for the operating system files, I have approx 11gb left to use. My phone says that I've used 10.5gb and have about 600mb available...