Insert the foreign SIM card into the ZTE dongle. Open your browser and type the default gateway (usually 192.168.0.1 or 192.168.1.1 ). Log in (admin/admin or user/user).
// ZTE Alternate v2 (slightly different multiplier, used for newer ZTE devices like MF65, MF920 etc) function generateZTE_v2(imei15) imei15.length !== 15) return "0000000000000000"; let imeiNum = BigInt(imei15); const A2 = BigInt(0x6C8B9A5); // 113,800,357 const B2 = BigInt(0x2F4A6C8E); // 793,384,078 const MOD = BigInt(10000000000000000); let step1 = imeiNum % BigInt(0x7A69B69); // 128,277,353 let step2 = (step1 * A2 + B2) % MOD; return step2.toString().padStart(16, '0');
123456789012345 Model: ZTE MF190 Unlock Code (16-digit): 9876543210987654
If your ZTE modem dongle won't work with a SIM card from another network, you’re likely seeing a prompt for a "Network Unlock Code" (NCK) or a "Service Provider Unlock Code" (SPCK). When you insert an unsupported SIM, the modem's software will ask for this code, typically to prevent you from using a competitor's network. Zte Modem Dongle Unlock Code Calculator -16 Digit- Online
: Find the 15-digit IMEI number on a sticker under the battery or on the side of the dongle. You can also find it by connecting the device to your computer and checking the modem dashboard. Use an Online Calculator
Use the calculator on devices you own outright.
When you enter your IMEI into a legitimate online calculator, the server performs a mathematical transformation using a private key or hash function. The output is a 16-digit number that matches the one stored in the modem’s lock partition. Insert the foreign SIM card into the ZTE dongle
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The algorithm used by ZTE is not entirely public, but it has been reverse-engineered by developers over the last decade. The is derived from the device’s IMEI (International Mobile Equipment Identity) —a 15-digit unique serial number. // ZTE Alternate v2 (slightly different multiplier, used
: You must first locate your 15-digit IMEI number, usually found on a sticker under the modem's battery or on the device casing.
It is crucial to double-check the code before entering it, as most ZTE modems allow only a limited number of attempts (often 5 tries) before permanently locking the device to the original network.
Advanced users can connect to the modem using a terminal application (like PuTTY or DC-Unlocker) and send the command AT+CGSN to display the IMEI instantly. Step-by-Step Guide to Using an Online 16-Digit Calculator
