Starbucks will officially launch its iPhone-based mobile payment service today in all of its U.S. company-operated stores, allowing users of its Starbucks Card Mobile app to pay for their coffee and other Starbucks products directly from their iOS device. The Starbucks Card Mobile app was originally released in the fall of 2009 to allow iPhone users to manage their Starbucks Cards, tracking rewards and balances and reloading their cards. At that timeā¦