Most carriers will give you the unlock code for free if your contract has ended, or if you purchased the dongle outright.
The modem will restart and begin searching for the new network signal.
While using a ZTE modem dongle unlock code calculator is generally safe, there are some precautions and risks to consider:
Once you obtain the correct 16-digit code via a provider or server, follow these steps to apply it: Power off your ZTE modem dongle.
Several web platforms maintain access to ZTE's manufacturer database. You input your 15-digit IMEI, select your specific ZTE model, and the system queries the server to calculate the 16-digit code. While some older databases operate for free, complex 16-digit calculations usually require a nominal fee to cover API access to the manufacturer records. Step-by-Step: How to Enter the 16-Digit Code
Some online "generators" force you to complete endless surveys or credit card sign-ups, only to provide a random, non-working 16-digit number at the end.