Performs its function, except that the position error is less than one millimeter. He took me there to try several times before you can correctly position a. Yet I have already used the same model for Xperia S without any difficulty but the margin of error was wider. However faith in place and centered problem. The rendering is very sensitive to the touch and allows use by touch. Good resistance to scratch, as I have often in my pocket with a bunch of keys and no scratch has managed to cross the membrane.