Product Visionaires GmbH, a BenQ Mobile subsidiary based in Berlin, is a creative think tank developing future concepts primarily for BenQ-Siemens. They have released their designs of few concept mobile phones recently. These phone designs are indeed cool and creative.
A snake-clinging design which is creative in comparison with those strap concept mobile phones. You can see the media player controls in this picture.
This is how the whole thing look like.
Another concept model, with non-symmetric body and ununiformed key pad.
You can twist the display part around, and eventually the keypad part will form a stand for your mini screen, cool huh?
A concept model with touch screen and sliding control panel.