ZTE NX507J passes certification in China, is this the ZTE Nubia Z7 Mini?

Numerous smartphones have received the "mini" treatment, where a smaller version of the handset is also released to the public, and ZTE could well be adding another with a ZTE Nubia Z7 Mini. The mysterious ZTE handset has passed Chinese certification with the codename NX507J, which is pretty similar to the NX505J, believed to be the 5.5-inch Nubia Z7. The NX507J has a 5-inch display with a 1080p resolution, something that may attract consumers who don't enjoy the "phablet" experience.

source: androidcentral