The Open C comes in blue, orange, or black -- the colors most associated with Mozilla's open-source Firefox OS. On the back is a 3-megapixel camera.
Specs-wise, you're looking at a 4-inch screen with an 800x640 resolution, 512MB of RAM, 4GB of flash storage, and a 1,400mAh battery.
A distinctive metallic strip runs down its long edge. At 10.8mm thick, it's thinner than some rivals.
Atop the phone you'll find a power button and a headphone jack.
The volume rocker sits on the phone's right spine.
Firefox OS has two ways to install apps -- the Firefox Marketplace and this, the search tool powered by EverythingMe technology. It searches the Web for sites or apps that fit the search terms.
Because Firefox OS is a browser-based operating system, apps like this contact manager on the ZTE Open C are really just sophisticated, mobile-optimized Web sites.