https://www.ubuntupit.com/best-linux-secure-phones-for-privacy-and-security/ OS: Sailfish, Linux Debian and Linux Kali | Processor: MediaTek Helio P70 | GPU: Mali-G72 MP3 GPU | RAM: 6GB | Battery: 4,220 mAh | Display: Internal – 5.99 inch, FHD+ (2160×1080), External – 1.91 inch, Amoled | Camera: Rear – 24 MP, Front – 5 MP | Storage: Internal – 128GB, External – microSD supported | Weight: 326g + It supports dual boot. + You can use Desktop Linux in it. + Very unique design. – Difficult to use in portrait mode. – Doesn’t support wireless charging. Cosmo Communicator is one of the most convenient Linux secure phones with a physical keyboard. It is the second smartphone of Planet Computers that comes after the huge success of the Gemini PDA. But you’ll surely be confused if you watch it for the first time because it is too bulky as a smartphone and too lightweight as a smartphone. However, it comes with most of the modern technologies. https://www.indiegogo.com/projects/cosmo-communicator#/ https://pdaplaza.ca/products/cosmo-communicator-dual-sim-6gb-128gb-wi-fi-4g-lte-qwerty-us Price: $799 CAD