Where can i get the iphone sim free software?

Question

i heard that this is a good software for unlocking your iphone,but where do i get it

Answer 1

go on youtube see how to install. he will tell you the site or the link will be in the top right corner of  the box with the profile information.

Answer 2

if its the classic

then www.ziphone.com

if 3g i dont wanna refer you because i dont get it even yet