On 15 December 2020, the Minister of Communications and Digital Economy, Dr Isa Ali Pantami, issued a joint directive with the Nigerian Communications Commission and NIMC: every Nigerian SIM card must be linked to a NIN within two weeks, or be disconnected. The deadline was extended seven times. The policy was not. By the time the linkage exercise effectively closed in April 2022, the regulator had blocked roughly 73 million unverified SIMs — and Nigerian NIN enrolment had vaulted from 42 million (Dec 2020) past 78 million (Dec 2021) to 104 million (Dec 2022).
It was the fastest civil-registration expansion in African history, and it happened not because NIMC suddenly worked but because the mobile networks did the enrolment for it. MTN, Airtel, Glo and 9mobile — under pain of regulatory fines — turned every branded shop, every dealer kiosk, every roadside agent into an enrolment point. Banks, watching the SIM purge unfold, quietly began demanding NINs to keep accounts active. The Federal Inland Revenue Service made the NIN the Tax Identification Number for individuals. JAMB linked the 2021 UTME registration to it. The passport office began requiring it in 2022.
The legal architecture for all of this was the same dormant Section 27 of the 2007 Act, finally activated not by the Minister of the Interior but by a telecoms regulator. The constitutional question — whether a 2020 ministerial directive can lawfully cut off a citizen's phone line for not enrolling in a register that the 2007 Act had given no enforcement date — was raised by SERAP and a coalition of digital-rights groups in 2021 and is still unresolved. The Federal High Court in *Paradigm Initiative v AGF* (2022) declined to halt the linkage, citing 'overriding security and identity-management interest'.
What the NIN-SIM link actually produced was a single national gate. By the end of 2022, you could not legally make a phone call, send a bank transfer, receive a salary into a verified account, register for university, get a passport, or collect a federal social-protection transfer in Nigeria without quoting one eleven-digit number that had not existed for most citizens two years earlier. The state had finally built the register the 2007 Act promised. It had done so by outsourcing the enrolment to private telecoms and using the threat of disconnection as the compliance mechanism. The convenience was real. So was the new failure mode.