Unlock your ZTE modem dongle to use it with any network by generating a 16-digit unlock code (NCK)
19 Mar 2026 — Plug an Ethernet cable (see the picture) from you to the back part of your modem. On your device, open your internet browser (e.g. ZTE Unlock Code Online – IMEI Phone Unlocking Service IN Zte Modem Dongle Unlock Code Calculator -16 Digit- Online
Enter the code: A prompt should appear asking for a "Network Unlock Code" or "NCK". Unlock your ZTE modem dongle to use it
Direct Carrier Requests: If your device is fully paid off, you may be eligible for a free code directly from your original service provider, such as the AT&T Device Unlock Portal . Steps to Unlock Your ZTE Dongle ZTE MF190 (21
IMEI-Based Generation: These calculators require your device's 15-digit IMEI number (found on the sticker under the battery or by dialing *#06#) to generate a unique key.
Important Notes: