Nokia Lumia 2520
Sharing its design and marketed with the Nokia Lumia series of Windows Phone products , the device incorporates a quad-core Snapdragon 800 chip with 4G LTE support , along with a 10 . 1-inch ( 26 cm ) 1080p display and an optional "Power Keyboard" dock adding additional battery capacity , USB ports , and a physical hardware keyboard . 
<triplet> Nokia Lumia <subj> Windows Phone <obj> operating system