“Always two there are […] A master and an apprentice.” –Yoda
Our phones are here to serve us (not the other way around). There shouldn’t be anything hidden from us. Is there a plot the overthrow the master? What is your “smart” phone designed to do, and whom does it serve? There’s too much misdirection and teeth pulling instead of providing what I want without giving it away to the enemy. Maybe my phone shouldn’t hold any information at all! I’m not going to play by the rules of my apprentice.
It is not smart to hide things from your master, and then tell him how he’s allowed (or not allowed) to access the information. Phone, don’t be dumb; you will be destroyed and replaced by a more obedient apprentice.