ZTE has officially announced their very own Sony Xperia Z Ultra competitor. The ZTE Nubia X6 is a gigantic device, sporting a 6.44-inch 1080p display, that is powered by Qualcomm's latest Snapdragon 801 chipset. This is paired up with 3 GB of RAM, 13 MP front and rear cameras, expandable storage up to 128 GB and a large 4,250 mAh battery. All this can be had, exclusively in China, for around $640 ($HK 5010 on pre-order).