"The only phone secure enough to hold cryptographic coins" Sirin Labs is the company behind the $14,000 Solarin smartphone. They are now developing an open-source model that runs on a fee-less blockchain!
The Finney, named in honor of bitcoin pioneer Hal Finney, will be the only smartphone in the world that is secure and safe enough to hold cryptographic coins claims the company
https://www.engadget.com/2017/09/26/blockchain-smartphone-sirin-finney-solarin/
The phone will carry a $1,000 price tag, 256 gig internal memory, 16mp camera, A behavioral-based intrusion prevention system and a physical security switch and blockchain-based tamper proof feature.