What a monumental pain in the backside.
Technology will sink ya! (If your not careful)..
Feature phone for me all the way - that's both for regular use and my punting phone.
Its not like I've got anyone to snoop on me - I just object to bloody smart phone intrusions in general.
I also use a 'live' operating system when browsing on a laptop or computer.
This one is very good http://www.porteus.org/faq.html
There's no 'history' issues with 'live' operating systems because;
You plug the usb (or cd) into the computer, switch it on, then the whole operating system loads into the computers RAM as it starts up!
When you switch off the computer - the operating system ceases to exist (browser, video player, history, everything), because it only ever existed in RAM in the first place..
Safe from the Mrs ++ you can never get any viruses.
In fact you could tell the Mrs to use the live operating system too, to cut down on viruses.
You could even run it on a laptop with no hard drive whatsoever - it would work just the same