The app is deemed secure enough to be used on US government networks, at a time when the same people are fighting against the use of encryption.
New Silent Circle smartphone promises to be the most secure and private Android device available, and delivers with surprising ease of use.
Security firm Silent Circle has revamped its smartphone that helps people manage personal data. The Blackphone 2 adds software to the basic Android operating system so people can fine tune what each app, service and site can know about them.
The company behind the privacy-focused Blackphone has told Newsbeat it is planning to release a tablet.
Jon Callas, co-founder of Silent Circle which makes the anti-snooping device, said "we are going to have a tablet soon".
