...bought for Prepaid Plans? I have alot of At&t phones but only 2 of them are prepaid. Will a phone card work for either one of my phones or will it only work for a phone thats strictly made for prepaid only?
HI you can't use cingular sim in any other phone which is locked to AT&T or any other network provider .To fix this you have to unlock the phone from AT&T only then you can freely use it with cingular or any other GSM sim ..You can easily unlock the phone through online providers like WickedUnlock.com here they are rendering network unlock code for all mobile models at reliable cost .You first check that whether the code is available for your mobile model ,country and network provider .If yes then pay for it and unlock the phone then freely use it with any GSM sim ...