Some iPhones and/or iPads I've seen don't have a "System" entry (it's all the way at the bottom of the SETTINGS>General>iPhone Storage screen (give it time to load)). Others are anywhere from 4.x-9.xGBs. The inconsistency is bugging me. Has anyone figured out why it shows up on some devices and not on others? And has it been confirmed that this represents the OS itself plus cache/temp files?