Install the official Qualcomm/ZTE USB drivers so your Windows PC can recognize the phone in Diagnostic (Diag) mode.
Once completed, the log will output: Unlock Done or Success . Method B: Read Codes
stands for Network Control Key – the 8-to-16-digit code that permanently unlocks your phone to any GSM carrier. A dongle is a physical USB hardware box (e.g., NCK Pro, NCK Box v2, or Z3X Easy JTAG) that connects to a PC. Inside the dongle is a licensed algorithm that communicates with ZTE’s security database.
Unlike older ZTE phones, the Z320 uses a modified chipset with enhanced lock mechanisms: zte z320 unlock nck dongle link
Ensure your NCK Dongle smart card is firmly seated inside the USB token and that your annual software activation has not expired.
While unlocking network restrictions rarely alters user files, it is always a best practice to back up any critical contacts or messages stored on the phone before running service software.
(or a compatible equivalent if the exact model isn't listed) as the model. Prepare the Device Install the official Qualcomm/ZTE USB drivers so your
Unlocking cell phones is entirely legal in most jurisdictions globally, provided the device is fully paid off and not blacklisted or reported lost/stolen. Ensure you use official NCK Dongle software updates to prevent damaging or bricking your phone's NVRAM data.
: Power the phone into FTM (Factory Test Mode) by holding Volume Down + Power.
The software will communicate with the phone and read the security partition. A dongle is a physical USB hardware box (e
Before starting the unlock process, gather the mandatory hardware and software components listed below. Necessary Hardware
Carefully type your phone's 15-digit into the designated field. Click Calculate Codes .
. The NCK Dongle (or NCK Box) is a professional flashing and unlocking tool that interacts with the phone's internal software to calculate or directly write unlock codes. Prerequisites for Unlocking
You may need the dedicated Device Unlock App for American carriers Easysimunlocker.