Turbo SIM
Turbo SIM is put in Iphone 4 the is locked... and it let it works..
and i have a locked Iphone 4 AT&T but im in Egypt, so if I put this Turbo SIM, it would harm my mobile??
As I said in the other thread you started, it voids the warranty. I don't know if it will hardm the phone or not, and you cannot get a definitive answer in an Apple forum.