http://www.dailymail.co.uk/sciencetech/article-3248377/The-secure-phone-world-799-Blackphone-2-encrypt-selfies-voice-calls-impossible-track.html
A phone can never be too secure so there will always be a market for more secure phones.
https://www.youtube.com/watch?t=199&v=fuvGwai5Uy0
