The HTC-built smartphone was the first device built on Google Android, the open-source operating system. The touch screen, which features a full slide-out QWERTY keyboard, offers 3G support ...

and is among the first phones with faster HSPA+ 14.4 3G data. Other features include multi-touch screen, slide-out keyboard, Android platform, WiFi, Snapdragon processor, GPS, and a memory card slot.

Part of Samsung's Galaxy S series, this high-end Android smartphone sports a huge 4 ... Unique to the Epic 4G are a slide-out keyboard, 4G data, mobile hotspot feature, and front-facing camera.

Bringing back sliding keyboards to smartphones is possible with inexpensive ... a traditional PC desktop-like experience. Simply slide up the phone, and you've got a nearly 7-inch desktop with ...