Microsoft is pitching the Duo as a more useful tool than a conventional smartphone. CEO Satya Nadella, for instance, uses one screen to take notes and the other to read a book on Amazon's Kindle app. The Duo has two 5.6-inch displays and, when opened like a book, is a slim 4.8 mm thick, making it what the company says is the thinnest device on the market.from Tech-Economic Times
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