Oddbean new post about | logout
 You just said "with sim it is still a spyware device tracking and tracing you wherever you go"

Doesnt matter about apps. They will know where you are.  
 he explains it in detail:

https://www.youtube.com/watch?v=FNesDitYqnY

they can know where you are if they do not know WHO you are
 
 They know where the phone is at all times is my point. As long as there is a sim card with power, its tracked. Easy to leave at home though.