http://www.samsung.com/us/

Who know this font??
http://www.youtube.com/watch?v=2LHv1FPd1Ec
And the same font in this video!!!
Also the same font on following picture!!!

Samsung Interface  Suggested by shamon 

Samsung Interface

donwload it form here

http://www.samsung.com/us/fonts/samsungif_rg-webfont.woff
http://www.samsung.com/us/fonts/samsungif_bd-webfont.woff

and use font forge and generate a ttf font