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The device will run a custom build of Android called PrivatOS.
"The tools installed on Blackphone give you everything you need to take ownership of your mobile presence and digital footprints, and ensure nobody else can watch you without your knowledge," the Blackphone Web site states. "You can make and receive secure phone calls; exchange secure texts; exchange and store secure files; have secure video chat; browse privately; and anonymize your activity through a VPN."
The companies say the device, which will be unlocked to work with any GSM carrier, will be available for pre-ordering at Mobile World Congress in Barcelona on February 24, 2014.