Can i use a prepaid cingular prepaid Sim Card for my I-Phone?

[Izzy]

Do have to use something or just put it in and i could use it?

 

[saravedi]

If the I-Phone Unlocked Phone means...You can use Cingular Sim card...If the Phone is an locked phone You cannot use other Sim card.....You can get the Remote unlock service from Superunlockcodes.com and Unlock it easily.Then use Cingular sim card.