Use reputable services like IMEI.info or sim-unlock.net to request a code based on your IMEI.
Input the code provided by your chosen online calculator or service and confirm. Your device will now be permanently unlocked. Important Safety Tips ZTE Unlock Codes - IMEI.info Zte Modem Dongle Unlock Code Calculator -16 Digit- Online
Put a SIM card from a non-supported network into the dongle and plug it into your computer. Trigger the Unlock Prompt: Use reputable services like IMEI