The NIN is a compulsory requirement for the activation of every SIM card for all networks in Nigeria. It is a must-have for all telecommunications networks in the country.

It’s hard to register for a SIM card without the NIN, and a lot of users are now looking for ways to link their NIN to their MTN number.
MTN has made the process of linking your NIN to your MTN number very easy. So, if you have an MTN SIM and are wondering how to link NIN to MTN, this is the guide you need.
Follow the steps below to easily link your NIN to your MTN SIM using the USSD code or via SMS.
How to Link NIN to MTN Using USSD Code
Here’s how to link NIN to MTN using the ussd code!
- Dial *785#.
- From the pop-up box, select "1. Enter your 11 digit NIN /16 CharvNIN" from the options displayed.
- Next, enter your 11-digit NIN in the column provided.
- A confirmation message will be sent to you once your NIN is validated.
Dial *785*Your 11-digit NIN#. For example, dial *785*12345678910# to link your NIN to your MTN number.
How to Link NIN to MTN Via SMS
To link your NIN to your MTN, send a text message to 785 with the following format: NIN-[Your eleven-digit NIN]. For example, send NIN-12345678910 to 785.
Note that linking NIN to MTN either by using the USSD code or via SMS method is completely free, so if you have your NIN, use any of the above methods to link it to your MTN number.
How to Link NIN to MTN After Being Blocked
If your MTN number has been blocked due to you not linking your NIN to it, use the same process of linking your NIN to your MTN number to unblock and reconnect your MTN number.