Depends on how they are built.
To be honest I'm skeptical about it since it may not be something that everyone needs in his life and it should be also secure compared to normal crypto services,I guess only crypto fans would buy like this phone.(Ofcourse others will still opt for an iPhone or a Samsung  wish is unfortunate but that's just the beginning of the blockchain concept)
But yeah,it's a good start,atleast there is companies interested in blockchain technology.Let's see where it goes.