Here is the next generation of mobile-ear phone designed by Ilshat Garipov. The idea behind Kambala was to mobile handset which can also be used as ear phone.
Press the center piece and the earpiece comes out which you can clip to your ear. I am still unsure as to why such a compact phone has not hit the market. Best feature of this mobile is that you can also choose your skin color when you clip it to your ear which makes it completely invisible.