The ZTE Grand X is a smartphone that stands right below the company's flagship, the Grand S. The company is apparently selling the Grand X Quad in China for ¥1,699 or about $270 in China since late February, but there was no official announcement, press release or images of it. Allegedly, the reason of that is terribly limited availability.
Thanks to folks over at @evleaks, a press image of the ZTE Grand X Quad has been leaked, and it confirms a 5-inch display. It is powered by a 1.2 GHz quad-core processor which seems to be the MediaTek MT6589 along with 1GB of RAM.
At the back, there is an 8-megapixel camera with LED flash that is capable of 1080p recording. The Grand X Quad measures 141.0 x 70.0 x 8.9 mm and weighs 163 grams with a removable 2500 mAh battery.