Here are easy and quick steps to link your National Identity Number (NIN) to your MTN line via USSD and Online.
Link your NIN to your MTN Line Mobile Number
Dial *785# using the phone number you wish to link, enter your NIN and submit or dial *785*Your NIN# from the phone number you wish to link. The number will be linked to your NIN automatically.
You can also visit https://mtnonline.com/nin/ or download MyMTN App to submit your NIN details.