Planet Computers' clamshell phone can dual-boot Android and Linux
 

Planet Computers' laptop-like Cosmo Communicator phone just became that much more useful to its audience of very particular power users. The Cosmo now supports a promised multi-boot function, letting you run Android (both regular and rooted), Debian...

https://www.engadget.com/2020/02/24/...mo-multi-boot/