"Freedom-respecting computer manufacturer" Purism announces what it calls the "world's first encrypted, open platform smartphone"-- the Librem 5, a phone able to make encrypted calls hiding the user's number.
The device is also able to send encrypted texts and emails, as well as set up a VPN for web browsing. It is compatible with 2G, 3G and 4G connections with any GSM, UMTS or LTE network, and even carry hardware kill switches for the microphone, camera, wifi/Bluetooth and baseband.
The OS of choice is PureOS, the Purism-developed Debian GNU/Linux derivative. It should also be able to run most GNU+Linux distributions. And in case the user wants even more control, Librem will release the device source code, making it open for editing.