Lenovo has introduced 2 new devices to its Yoga and IdeaPad line of laptops. The Yoga Duet 7i and IdeaPad Duet 3i are the first convertible devices with removable Bluetooth keyboards to launch in their particular categories. This resembles Microsoft’s Surface line of hybrid laptops. The Yoga Duet 7i is a premium 2-in-1 Windows 10 tablet, with assistance for optional LTE connectivity, a presence-sensing system for secu