A is a digital solution used to bypass network restrictions on ZTE internet hardware. Many mobile network operators sell USB modems, pocket Wi-Fi units, and 4G/5G dongles at a discount but lock them to their specific network. To use a SIM card from a different provider, you must enter a specialized 16-digit Network Unlock Code (NCK) .
The service will calculate the code based on your IMEI. Zte Modem Dongle Unlock Code Calculator -16 Digit- Online