Samsung official code service from official samsung database for at&t, Spectrum, Cricket and Xfinity Service with 1 - 5working days time max in a very rare cases it takes extra couple of days please allow that, so you can use your device on any network worldwide. You will get both NCK and MCK code in this service. This service has 100% success rate. Before placing order please make sure your device is prompting for code screen to input the code we provide you. If device doesn't prompt for code screen then it’s not supported. Support all Samsung galaxy cellphones models that asks for CODES. ATTENTION🚨 It is better to enquire before PLACING ORDER.