Necuno

The Necuno is a phone-like mobile device exclusively manufactured in Finland. The device is designed with a focus on enhancing security and user privacy by omitting the cellular modem, which prevents its use on conventional mobile phone networks. Instead it offers VOIP via a peer-to-peer encrypted communication platform called Ciphra. Standard cellular connectivity is planned for later versions.

The Necuno is mostly open-source, apart from an isolated firmware blob without access to the main memory, used in the Wi-Fi driver for regulatory reasons. The device uses Plasma Mobile by default, but it can run a variety of open-source mobile operating systems. It also has an ethernet port.