Several videos of prototypes of Ericsson's ‘ Phone' have emerged, giving viewers an early at Sony's answer to the increasing popularity of on the iPhone.

Leaked of the ‘PlayStation Phone' were published by Engadget in October, but hands-on videos posted to this week are the best evidence for the phone's existence so far.

The device, which is listed as the “Zeus” model number in the , has slide-out physical controls similar to the Sony PSP Go handheld gaming device, in addition to a touchscreen, which reportedly measures 4 inches. The slide-out controls appear to have the rumored multi-touch touchpad.

The video also corroborates rumors that the smartphone runs Google's “Gingerbread” 2.3. Earlier reports indicated that the phone has a 1GHz chip, 512MB of RAM, a 5 megapixel camera and 1GB of internal storage.

In a second video, the user selects the “PlayStation” to verify the smartphone's PlayStation functionality, though the device lacks any “content items” to display.

via AppleInsider, By Josh Ong