Silent OS


A foundation built on privacy


Silent OS is an Android-based operating system, enhanced to address mobile privacy concerns facing enterprises today. Free of bloatware, hooks to carriers, and leaky data, Silent OS puts privacy in the hands of you and your enterprise, without compromising productivity.


Spaces creates multiple, separate virtual phones on one device, enabling work life and personal life to stay securely compartmentalized. No data is shared between spaces.

  • Create up to four separate spaces that act like virtual phones
  • Keep your apps and data secure
  • Customize each space any way you like


Enterprises spaces are set and controlled by the enterprise, not the end user, enabling user satisfaction while reinforcing enterprise security needs and policies.

Security Center

At the heart of Silent OS, Security Center puts privacy settings at the user’s fingertips.

  • Easily configure settings for individual spaces
  • Manage which apps live in each space
  • Fine tune individual app permissions so that the user decides the level of data access each app receives

Apps designed with privacy in mind

Blackphone comes preloaded with our own apps as well as third party apps that enable private, encrypted communication.

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Peer to peer encrypted audio and video calling

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Helps you avoid risks from insecure WiFi networks

Best in class vulnerability management

Silent OS has the world’s fastest vulnerability management. Critical vulnerabilities are patched within 72 hours of detection or reporting, and updates come directly from Silent Circle, with no carrier delays or waiting periods.

Make your enterprise more private

Talk to our sales team and find out how Silent Circle can help keep your enterprise data private in today’s mobile-first world.