I deal with the DoD phones every day and it's not that the Android hardware or OS is slower or inferior, it's that the DoD's implementation is. I personally don't like iOS and find my Samsung phones far superior for personal use, but once the security software is installed the Galaxy phones are virtually useless (and this includes all the way up through the S6, not just completely outdated models). They completely missed the point on how Knox is supposed to work and try to secure both the regular partition and the Knox partition which just screws up both of them. They constantly lose connection to the server and have to be reset or just freeze entirely. Despite my vehement dislike of iOS I advise people to only get iPhones now for the office. It's just not worth fighting with what they've done to Android. So when SOCOM says their Android phones are slow and freezing and the iPhone is much faster it's completely true in the context of government secured versions (in the context of personal phones that don't have everything useful disabled in the name of security, I'll stick with my S7 Edge).