Clamshell-style folding screens have made flip phones cool again – these are the best flip phones on sale, and the ones to ...

The BT Zenith phone is for all of the people that want the coolness of a cell phone without the messy contract or hassle. It looks like a traditional clamshell cellphone and even has similar features.

Phones have on-screen keyboards. Laptops have clamshell designs. The next-generation enterprise mobile device will have both. A dual-screen clamshell mobile device makes sense. Smartphone makers want ...