Sprint to sell dual-screen ‘Echo’ smartphone

NEW YORK -- Sprint Nextel Corp. has unveiled a smart phone with two screens, one stacked on top of the other. The top screen slides out so that the two lay side by side, producing screen space that rivals a tablet computer. The phone, called the Echo, is made by Japanese manufacturer Kyocera Corp. and has screens that are each the size of an iPhone's display. Put together, they create a larger space for typing e-mails, playing games and watching videos.