Many links claiming to be "NCK Dongle Crack" for the Z320 often contain malware or outdated loaders that can "brick" (permanently damage) your phone's software.
Unlocking a (often a MetroPCS or T-Mobile device) using an NCK Dongle requires generating a Network Control Key (NCK) based on the device's unique IMEI. Prerequisites zte z320 unlock nck dongle link
Open the NCK Dongle Qualcomm Module on your PC. Ensure your ZTE drivers are fully installed so the computer recognizes the device. Many links claiming to be "NCK Dongle Crack"