"Nano-texture glass" and "Nano-texture display" should refer to the same: A microscopic etching into the display glass.
"Nano-texture finish" on iPhone Duo refers to an additional layer they put on top of the display panel. It's basically a sticker with a similar (same?) surface structure (they can't put it on the display glass itself because it's too thin)
"Nano-texture finish" on iPhone Duo refers to an additional layer they put on top of the display panel. It's basically a sticker with a similar (same?) surface structure (they can't put it on the display glass itself because it's too thin)