Aside from the Grand S II, ZTE also took the opportunity at CES to show off a couple of other handsets that have so far only made an appearance in China. Both the Nubia 5s and the 5s mini are essentially follow-ups to the Nubia 5 we saw a few months ago, with slightly different designs and specs. The 5s has a very similar look to the 5, with a 5-inch 1080p display and a slim chassis that marries a plastic back with aluminum sides. Measuring 137 x 68.8 x 7.6mm and weighing in at 126 grams, the 5s has a surprisingly premium feel thanks to the cool, sharp edges on the front and curves on the back. Unlike the 5, the 5s has a dedicated camera button.

Another nice upgrade is that the 5s comes packed with a 2.3GHz Snapdragon 800 SoC, which is certainly an improvement over the S4 Pro on the 5. We didn't notice any discernible lag while navigating the phone and it feels quite zippy overall, though admittedly we only tried it out for a few minutes. Other specs include a 5-megapixel front camera, a 13-megapixel rear one with optical image stabilization, a 2,300mAh battery, 4K video capture, 2GB of RAM, DLNA, Bluetooth and NFC support. As far as software goes, the Nubia 5s runs a custom ZTE version of Android 4.2. We're especially intrigued by the camera software, which allows you to fine-tune the exposure, focus and even white balance by dragging certain shape icons across the screen. And of course, there are built-in camera filters a la Instagram as well.