: Click "Calculate" or "Submit" to receive your 16-digit NCK code.

A popular, user-friendly software that supports many ZTE modems.

However, republish the APK on the Play Store under a different name — that would violate copyright. For personal sideloading on your own device, you are safe.

Avoid downloading random .exe files claiming to be v17. If you have a modern device, use a paid, reputable unlocking service like DC-Unlocker. If you have an old modem, verify the file hash with a virus scanner before running it, and accept that the success rate is only about 50% for newer firmware versions.

ZTE no longer actively updates this calculator app. v17 (2021) remains the final widely available 16-digit version.

To generate an accurate unlock code, you must provide specific hardware identifiers:

The ZTE Calculator utility is frequently packaged within larger, professional multi-tool service suites. These systems enable engineers to flash firmwares, repair IMEI variables, and calculate provider hashes instantly.

Save the file directly to your smartphone's internal storage.

The V17 version, popularized around 2021, is a lightweight utility designed for technicians and informed users to calculate these codes without needing to modify the device's firmware. Key Features and Compatibility

Enter your 15-digit IMEI into the calculator, select the model (if required), and click Calculate or Generate . Enter Code: