I guess if you call full fledged UNIX, a "toy". I suspect you don't have a clue as to what you are talking about. There is a reason the FBI had to hire outside help to hack the iPhone 5c. And the hack required access to the motherboard. And, that hack will not work with the 6 or any newer generation iPhone.
Meanwhile, hacks are not even necessary for the competition as there are back doors that give anyone access to your most personal information.
Me? If you want my private information, you need to get a subpoena.
No not full fledged Unix. Where is the shell? Where are the utilities, Python support?