Removing the network restriction off your ATT-Cingular Samsung BlackJack II cell phone has never been easier! All you need to do is supply us your ATT-Cingular Samsung BlackJack II Serial number (IMEI) during checkout and within the indicated time frame, we will email your unique Samsung unlock code. Simply dial in the unlock code supplied using the instructions provided just like you would dial any other phone number and you can now enjoy your unlocked ATT-Cingular Samsung BlackJack II and use it with any active GSM SIM card.