How to unlock Cingular Phones. You can unlock using ethical means. Unlock code is called Subsidy Code Call customer Service service ( tell them you need to unlock because you are traveling abroad) Important, as not everyone can request for their phones to be unlocked. They will give you the subsidy code. Now, once you have the code all you need is a Different Sim card ( not Cintular/att) insert that card and enter the code. Your phone is unlocked. IF you dont have other simcards, take the device to your cingular store ( they will unlock it for you) P.S Sometimes, you will not get subsidy code, they will have to make a case and they will call you back in like 10 days. Hope this helps.