Updating your SIM records with your NIN number is simpler than you think. NIMC said that Nigerians who already enrolled in the NIMC scheme but have lost their NIN should dial *346# to retrieve the NIN. The USSD code is available on all networks.
Failure of the subscribers to update their registration records with operators with NIN will lead to the blocking or disconnection of the line by December 31, 2020. Subscribers can link their NIN to more than one sim card.
If you have your NIN available, here are the steps to link your phone number with your NIN across the mobile networks on your own.
To link your number, dial *785# using the phone number you wish to link, enter your NIN and submit.
Dial *785#Your NIN# from the phone number. The number will be linked to your NIN automatically.
Alternatively, visit https://mtnonline.com/nim and fill the form.
Dial *121# on the Airtel line. Follow the prompts.
Wait for the confirmation message.
Subscribers are to text UPDATENIN followed by the NIN First Name Last Name” to 109 or simply visit the nearest Globacom office to register/link their NIN.
9mobile said it is currently making effort to develop a system that would make things simple for its customers. You can still check your NIN by dialling *346#.