Keep your Nigerian phone number active while abroad

To keep a Nigerian number active abroad you are dealing with a clock the regulator writes. India's prepaid floor is written the same way, by TRAI, and it applies without a request. Nigeria's sequence, in the NCC's prepaid section, is six months without a revenue-generating event, then another six before the number can be taken. The same rules add a request and a warning: a subscriber who is leaving may ask for the line to be parked, and the operator has to give notice before the number goes.

Six months, then six more

The NCC's consumer guide to churned lines states the sequence in three sentences, and it does not say prepaid: "A consumer line may be partially barred if it has not been used for a Revenue Generating Event (RGE) for six months. Partial barring will only allow the inactive user to receive calls for another 6 months. If the inactivity continues for another six months after the partial barring (a total of 12 months), the operator may churn the line, and the consumer may lose the number."

The Business Rules put the same threshold under the heading PRE-PAID, with different verbs and an exception the guide does not repeat: "A subscriber line may be deactivated if it has not been used, within six (6) months, for a Revenue Generating Event (RGE). If the situation persists for another 6 months the subscriber may lose his/her number, except for Network related fault inhibiting an RGE." The postpaid section of that document is about credit-limit notices, not this clock. A postpaid line is outside the rule quoted here.

The guide's middle stage is calls only. "Partial barring will only allow the inactive user to receive calls" does not mention text messages. That is a narrower window than Smart in the Philippines, whose help page says incoming calls and text messages keep arriving. A verification code that arrives as a text is not what the Nigerian sentence promises.

Churning is the NCC's word for what happens next, and its own definition keeps the "may": "a mobile phone number (MSISDN) that has been disconnected, deactivated, deregistered and withdrawn from a telecom consumer after a regulatory-determined period of one year of inactivity and may eventually be reassigned to another user".

The same guide names what a churned number can cost, and the sentence has a condition: "You may lose access to services linked to that number, such as banking alerts, One-Time Passwords (OTPs), email verification codes and social media accounts if you have not updated your contact details or transactional profiles on such avenues and platforms."

What counts as activity, and what does not

The regulator defines the qualifying event, and its definition is generous in one direction and strict in another. The Quality of Service Business Rules define an RGE as "any action by one or more subscribers that leads to Revenue being derived directly or indirectly by one or more operators", and then list ten of them. The first is "Outgoing and Incoming voice Calls", and the third covers "Outgoing and Incoming SMS and MMS".

Incoming traffic counts. A Nigerian line can be kept alive by messages arriving on it, which is the opposite of the arrangement at Globe in the Philippines, where the contract states plainly that incoming calls and texts are not valid activity. The same list also includes USSD transactions, mobile data, subscriptions to voice or data plans, and two items that are unusual to see in a regulator's document: line rental payment, and "Parked Numbers".

The strictness sits in the exclusions, which are on the same rules document. A recharge on its own is not an RGE: the list excludes "Recharge by any means that is not followed up by any of the defined activities above", and excludes the same thing when the money arrives as a transfer. There is also an exclusion for a line barred over SIM registration. The same list excludes "Transactions from barred Subscribers (Full Network barring) due to noncompliance to the Registration of Communication Subscribers Regulations during the reporting period". Those transactions are not the event the prepaid deactivation rule counts.

Line parking, which you have to ask for

The Business Rules put one sentence after the deactivation threshold: "A subscriber with a proof of good reason for absence is at liberty to request for line-parking."

Read that against the parked numbers entry in the RGE list. "Parked Numbers" is item IX, one of the ten events the rules count as revenue-generating. The document does not say that a parked line holds that status for the whole absence, or that the twelve-month count stops rather than pauses. Listing it as an event is not the same sentence as a freeze. Nigeria still joins China in the small group of countries here where the customer takes an action to keep a number. China's 停机保号 is bought and priced per month, India's prepaid protection is automatic and needs nothing from you, and Nigeria's request is the third shape: the rules state no fee, and nothing happens unless you ask.

The rules say who may park and why, in a phrase broad enough to cover an overseas posting: proof of a good reason for absence. They do not say how to ask. No fee is stated in the document. That is a statement about the pages of this PDF, not a finding that every operator parks a line for nothing.

The warning that arrives before the number goes

Nigeria's rules require the operator to tell you it is about to take the number, which is not a requirement we have read in any of the other regulators on this site. The same document, under reporting and notification, sets two deadlines: "Service Providers shall notify subscribers through alternative means of the churning of their lines at least 14 days to the date of the churn", and "Service Providers shall upload churned, swapped and blocked numbers into the Telecoms Identity Risks Management System within 24 hours of completion of the process".

The notice goes out "through alternative means", so an operator with no second contact on file has nowhere the sentence names to send it. Once the process is finished, the number is uploaded to that register within 24 hours. The sentence requires the upload. It does not say the register stops the previous owner's bank messages from reaching whoever receives the number next.

Money left on the line

The rules give the balance its own twelve months. The sentence, in the same prepaid section, reads: "Monies left in account on deactivation can be claimed by subscribers once proof of ownership can be established at any given time within 1 year (less any fee paid by the operator for the number within the 1-year of non-RGE)." The deduction is a fee paid by the operator, per the Business Rules. The claim still has to be made inside the year, and ownership still has to be shown.

What the carriers publish, and what we could not read

MTN sells the regulator's idea as a product, Keep My Number, with prices on its own page, and its card carries the quotes. MTN is the carrier whose own page our clients could read, and the gaps around the other three are worth stating exactly.

Airtel Nigeria's website is a client-rendered application: every address we tried returned the same 7 KB shell, and the product text is not in the HTML that any of our clients received. Glo answered HTTP 403 to curl, to the fetch client and to a browser-emulating request, on both the homepage and the product address. 9mobile, now branded T2, is readable over plain HTTP: we read its FAQ, its terms and conditions page and its consumer code of practice, and none of the three mentions line validity, deactivation or retention, nor does the site's own navigation offer a retention product. That is a statement about the pages we read, not a finding about what the company sells.

Before you fly

• Count six months from the last outgoing or incoming call, text, USSD session or data session. A recharge on its own starts nothing.
• If you are leaving for longer than that, the rules let you request line parking and keep proof of the reason. They do not say how long a parked line stays parked.
• Leave the operator an alternative phone number or email. The rules send the fourteen-day warning through alternative means, so the operator needs one on file.
• If the number is on MTN, the Keep My Number page is the one that states a term and a price. The regulator's parking sentence does not.