FOLLOW THIS STEPS TO GET YOUR MODEM UNLOCKED ONLINE:

Get your Modem and Look at the Back to Locate its IMEI Number, Usually Start with 35
e.g 359479030752110.

Just Write down the Number and the Make of the Modem e.g Huawei or ZTE. Click any of this Link For Huawei Modem click dis link;
http://a-zgsm.com/huawei.php

For ZTE Modem click dis link
http://a-zgsm.com/calculator/

Then you will see a Space for IMEI & also Security Code, Enter the Number at the Back of your Modem and Enter the Code Provided on the Website as your Security Code and then click on the Calculator Button. Your code will be Provided to You
e.g Unlock 37661140 or NCK = 37661140

NOW THE NEXT STEP TO TAKE!
The Generating of the Code is always the Hardest Part of Modem Unlocking, What you have to do next is to Remove the SIM Card in your Modem and Insert another SIM Card that is different from the Network of the Modem e.g If the Modem is an MTN F@stlink Modem, You will have to Insert an AIRTEL Sim or GLO into the Modem and Plug it to your PC.

- Just wait, A Pop Up will come up requesting for your Unlock Code, Just Enter the Code you Generated from the Website e.g 37661140 and click on OK.

- Congratulation, Your Modem has been Unlocked and you can now Use it with any Network for Browsing!
https://ttechbay..com/2018/05/how-to-unlock-modem-online.html