Wow. On the one hand, this is really cool. On the other hand, it's 600 USD for a phone that might be delivered in a year and a half and will not be able to run Signal.
Not running Signal seems like a security feature to me. The official Signal servers, and their stance on requiring a phone number and forbidding 3rd party clients is absurd.
What's the alternative? iOS has a poor story for jabber support, and the network effects for jabber are poor; the gradual network onboarding of signal made it easy to capture new users, but made it federation hostile.
As far as I can tell, that doesn't have a SIM card slot, so it's not quite comparable to a mobile phone. I don't care that much about making calls, but mobile Internet access does matter in discussions about smartphones.
