I got an iphone at friday and try to unlock it, at first 3hours it seems to be ok, can call and sending SMS, but later it occurred "No service" problem. when i use ziphone to unlock again, it seems to be showed my carrier but the signal was bad and i cannot dial or receive any calls.
finally i refurbished it using ziphone and activated it by itunes. but it still had "No Service" problem..
Can I take it to the apple store to repair it? cuz i activated it in normal way...