Samsung announced the C7 Pro shortly after the C9 Pro. It followed the same recipe, but distilled in a smaller package, and consequently, a smaller price tag. In a way, this is the more appropriate device to make a stand against the onslaught of Chinese smartphones. The smaller size also makes the C7 Pro more approachable for most people, who might have found the 6.0-inch C9 Pro intimidating size-wise.
Source: http://www.gsmarena.com/samsung_galaxy_c7_pro-review-1607.php
