Mozilla has launched Keon and Peak, two smartphones based on the Web-centric Firefox OS platform. The first phones will start shipping in February, and have been developed in cooperation with Spanish operator Telefónica and Geeksphone, which is based in Madrid.No pricing has been announced, but Firefox OS has been pitched as low-cost competitor to Android. It can deliver a far better experience than Android at handset price points of roughly $100, Telefónica said last year.