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BARCELONA, Spain--The Firefox OS phone app includes tabs for a dialing keypad, an address book to find contacts, and a recent call list.
The Geeksphone Keon viewed from the side.
The opening screen of Firefox OS running on a Geeksphone Keon.
The back of the Geeksphone Keon shows the Firefox OS logo and its 3.5-megapixel camera.
The Geeksphone Keon has an FM radio tuner app -- but it requires headphones to be used as an antenna.
The bottom of the Geeksphone Keon shows it's not terribly thin, but it is a low-budget phone, after all.
Carlos Domingo, Telefonica Digital's director of product development and innovation, holds a Geeksphone Keon Firefox OS phone.