It's called NEOU-WHITE
Minimalistic, with a little bit holo card style mixed with metro icon.
mycolorscreen link >> http://mycolorscreen.com/2014/01/11/neou-white/
Icon: Metro UI Icon Set - 725 Icons by dAKirby309
Font: Segoe UI by Microsoft and Neou by André Uenojo
For the wallpaper.... i will search the source, i forgot the source
Hope you like it
Made on Galaxy SIII Mini