Product conforms to its description, I was able to cut my sim microsim format, and it worked for! (I got a little scared because it's irreversible course and my Iphone 4 has hung the network only after a thirty second ...). As against the supplied adapter, do not allow me to try my microsim on my old Iphone: the inclusion in the latter was much too difficult, as if the chip "hung", I did not want to force it, and I saw myself fully to remove the top so no.