In 2014 Snowden said NSA can do so (but not how). It was quite discussed at that time. for example: http://www.tomsguide.com/us/nsa-remotely-turn-on-phones,ne

In 2014 Snowden said NSA can do so (but not how). It was quite discussed at that time. for example: http://www.tomsguide.com/us/nsa-remotely-turn-on-phones,news-18854.html http://www.tomsguide.com/us/nsa-remotely-turn-on-phones,news...