There has been talks about a blockchain phone in the works but it is closer than you think. A company by the name Sirin Labs is releasing a phone this November for a thousand dollars. It is called the Finney. It comes with a cold storage wallet to keep your funds in. There is also a service for token conversion. I am not sure how it works exactly but I think it uses a SRN coin that trades with the coin you need when you need it. And Messi might be advertising for it.
I have talked about a crypto phone before and how cool it would be. The problem is you would only put so much money on it as you would be afraid of losing it. And if there are not that many places to spend it offline then you don't really need to bring it with you. Though you could trade on the fly. As well as send coins for a service.
This type of device is probably ahead of its time. But it might be the norm in the years to come. Especially with dapps coming out, it would be nice to keep your coins safe as you use the application on your phone. And if a quick tap pay feature is made for it even better.
But I want to be one of the cool kids, so feel free to send me 1k so I can buy it :p.
Here is the link for more info: