How to check if your NIN is linked to your SIM card Before we show you how to link NIN to SIM card for all networks, let’s first take you through how to check if your SIM card is connected with NIN already. The process to check this is by dialing the USSD code 346#, and the eleven- digit number will appear on your screen. 346# can be used for all networks. <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle" style="display:inline-block;width:336px;height:280px" data-full-width-responsive="true" data-ad-client="ca-pub-2676590700924448" data-ad-slot="5270264218"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script>

You can only see the unique number if your NIN is linked to the particular line (SIM Card) you dialled it with. All mobile phone users are hereby advised to confirm if their NIN is linked with their line by following the procedures above.