NCC also hopes to introduce number portability in the nation's telecommunications sector on the basis of a central database of GSM lines. The registration exercise is expected to provide more reliable telecoms data, check crime, enthrone healthy competition among telecommunications players on account of number portability, aid planning, etc. SIM card registration service is available at various MTN Stores, Etisalat Experience and Distribution Partners' centres, Glo Mobile outlets, Airtel Shops, and even on the streets.
How Can a Subscriber Know Their SIM Card Registration Status
A subscriber registers his line by providing the required data to a personnel employed by a network who then input them into the system. Sometimes, some registrations may not be successful and a personnel may not notice and the subscriber walks away counting their SIM card registered. Networks sometimes send a notification to a registered line acknowledging the registration. However, this is not always true. In such a situation, a subscriber cannot be 100% sure that their registration was successful.
To be sure that your registration was successful, you, as an MTN subscriber, should text the word Reg to 789. After a few seconds, you will receive a text as to whether your SIM has been registered or not.
For Glo, text Reg to 3456 to confirm if your SIM is registered or not.
To the best of my knowledge, this service applies only to MTN and Glo, and is not yet available on other networks. However, you can still know if a SIM card has been registered. If you bought and attempted to register a new line, you should be able to make and receive calls if the registration was valid. If you have not registered your line, or your registration was not successful, you would be prompted to have your line registered whenever you attempt to make a call.
You can also verify your SIM card registration status by calling 200 (Etisalat), 111 (Airtel), 180 (MTN), 121 (Glo). You can also email email@example.com (Etisalat), Airtel on firstname.lastname@example.org, email@example.com (MTN), firstname.lastname@example.org (Glo).