How TO Unblock SIM: Correct Process On How To Link NIN To SIM And Resubmit

If you have successfully submitted your NIN before and your SIM was still barred, here is the reason and how to link NIN to SIM correctly that get verified.
But if this is your first time to link NIN to your SIM (MTN, Glo, Airtel and 9mobile), this tutorial guide will also be helpful to walk you through the whole process, Code and method via USSD and App.

Note: You can not use same code to link your NIN to for all network, such as MTN Code for Glo or Airtel.
Another mistake people make is using someone else (another person’s) NIN to link to your SIM.
It will not work?

Before you proceed to knowing which NIN code for different network, you have to first get your NIN number (can be found on NIN slip, National ID card) or virtual NIN online.
It is the 11-digit number after your Full name on the slip.
Code for NIN *346#
Service fee of ₦20
This can only be revived from the registered number in your NIMC profile.
Now, what method actually work and how to resubmit your NIN to MTN, Glo, Airtel and 9mobile.
I will tell you for Free.