Following the order by Federal Government that all telecom operators should disconnect all sims not synced with the National Identification Number (NIN), here is a quick tip on how to check if yours has NIN linked.
Dial *346# and press 1
The service costs N20 per dial.
Hint: Some people will still have NIN linked as long as they completed their registration appropriately even though they don’t have National ID Card (NIMC).