ROK Mobile, a single price combined service that includes unlimited voice, texts, data and full access to a 20 million song catalog - will launch in the U.S. on July 4th. The music service will be powered by 7Digital with Gracenote providing automated playlisting and additional content. ROK Mobile is the brainchild of John Paul DeJoria (pictured right), the marketer behind Patron Tequila and Paul Mitchell Hair Products and British serial entrepreneur Jonathan Kendrick. Arterra Mobility, which serves more than 20 MVNOs, will power ROK Mobile's activations, billing, customer care and integration via its nationwide GSM-based 3G and 4G LTE...

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