The Librem 5, currently up for preorder through a crowdfunding campaign, is Purism's attempt to create a privacy-focused smartphone. The phone will run a mobile variant of PureOS, which is Purism's own custom GNU/Linux-based operating system.
https://www.notebookcheck.net/Purism-turns-to-crowdfunding-to-develop-their-Linux-based-smartphone.244310.0.html