So i got this iphone at a yard sale about a month ago and have been using it as a ipod (my brother has)
any way i have att but want to get a line for him when i put my sim in there it will recognize that there is a sim in there and will stay at that. with the "._ _ _ (wifi)" at the status bar. when i go under setting and phone the phone # comes up on there but i cannot receive or send calls. I did Unlock it so it should not make much of a difference what carrier i use.

i tried a couple of different sim cards the new ones with the smaller contacts the old ones with the bigger contacts nothing (it really should not make a difference.

I have restored several times. but nothing happens.