There are some few mobile phones that belong to the class of pseudo-clamshells on the market and they are mostly put out by minor companies. The distinction from ordinary clamshell lies in the fact that a keypad and a screen are placed on the lower, main part. There are merely a loudspeaker and an aperture showing the external screen on the upper part. There is no need of applying expensive connection to transmit data to the other part and the lack of the other screen cheapens production greatly. One can call it an active flip variation, but here flip equals the phone height.



Link: Mobile Review