Switzerland-based startup Sirin Labs has unveiled the design for a $1,000 dual-screen 'secure' blockchain smartphone called Finney which is endorsed by football player Lionel Messi. Running Sirin OS, the phone comes with a built-in cold storage crypto wallet which supports major cryptocurrencies and tokens. It also features 6 GB of RAM, 128 GB of storage, and a 12-megapixel rear camera.