One of my very favorite podcasts in the world is called Reply All.
It is ostensibly, a podcast "about the internet", but they get into many, many different subjects.
Anyway, for the sake of investigation... one of the two co-hosts allowed the other to put "spyware" on a android phone, and then use that phone... to see what the other person could see, and what could they access.
It was really interesting, and worth your while to listen to, particularly if you are interested in security, and knowing what type of data is at risk when using an "infected" device.
Here is a LINK to the show page on the Gimlet website.
-You can listen to it directly on the page, or you can download it from there, as well.
Also, typically Reply All posts their shows on Soundcloud, but this episode hadn't posted when I wrote this blog post.