This smartphone comes with a tagline "New standard for ultra-secure mobile communications," indicating, it's a device that takes security seriously.
The Sirin Labs Finney U1 is a secure smartphone, backed by blockchain technology and it is also touted as the world's first cyber-protected blockchain-enabled smartphone.
The Librem 5 by Purism is a security and privacy-first smartphone that offers all the controls to the user.
The device is powered by a secure operating system, and according to the company, this is a tamper-proof smartphone with MIL-STD 810G military certification.
The device has its changed firmware, and there is the addition of its own VoIP applications (by Kryptall) to ensure that all phone calls are fully encrypted.