iPhone 6 Memory Usage
I have an iPhone 6 16GB. My memory is close to full and when I look at the Usage under the Manage Storage screen, it says I've Used 11.7GB. When I sum up the memory used by app below I'm getting a figure closer to 3.2GB used. What could be causing this discrepancy? Why am I being limited to something less than very old iPod models?
iPhone 6, iOS 8.4.1, 16GB