I have found this software on the web site. Currently i am looking for a way to unlock At&t's sim luck becasue i use T-mobile as my carrior. I could get my 3G iPhone Jailbreak, and activation. but still can't get the sim unlock. I have found this 2 thing below they both say they can unlock 3G iPhone with the sim problem please give me some advice see if they are trustable to use or not. http://iphoneunlocking.org.uk/ http://www.sundacom.com/sdp/417210/4/pd-2297849/4501681-1151729.html Ps. please give me some choice see if any of them is good to unlock 3G iPhone sim card lock.