I totally don't understand what you mean. Full disk encryption isn't new in the iOS or Android world. iOS for examples supported it since iOS 4. But full disk encryption doesn't protect against buggy OS. No one really expected to take apart a phone, extract its flash, and be able to read its contents that way.
I'm no expert on encryption, but this article made it sound like several of the areas that made iOS less than secure weren't bugs, but specific design choices in terms of what they allow developers to do, which often make things more vulnerable.
I guess I was asking if, in a world where someone could (feasibly, if not easily) take one of the existing mobile Linux distros and modify it to make it more secure than Android or iOS, or if they're already sort of at the limit there and barring a fundamental advance in computer security across the board, this is just how things are?
