provided by the official developers. This site includes links to the latest software versions and firmware loaders needed for older ZTE devices. Alternative Method (Without Dongle)
If the phone enters "Field Test Mode," the NCK software can usually still communicate with it to perform the unlock. zte z320 unlock nck dongle link
Unlocking a ZTE Z320 phone using an NCK dongle is a straightforward process that requires a few simple steps. The NCK dongle is a reliable tool that can be used to unlock ZTE phones, including the Z320 model. By unlocking the phone, users can enjoy the benefits of freedom to switch network providers, increased resale value, and the ability to use international SIM cards. provided by the official developers
To unlock your ZTE Z320 using an NCK dongle, you'll need: Unlocking a ZTE Z320 phone using an NCK
On your ZTE Z320, go to Settings > About Phone. Tap "Build Number" seven times to enable Developer Options. Go back to Settings > Developer Options and toggle on USB Debugging .