{
  "id": "policy/bvn-phone-number-one-time-change",
  "signature": "AI tells a Nigerian bank customer they can update the phone number linked to their BVN whenever they need to",
  "signature_zh": "",
  "regex": "(bvn.*(phone|number).*(change|update)|update.*bvn.*nigeria|bank verification number.*phone number)",
  "domain": "policy",
  "category": "administrative_barrier",
  "subcategory": null,
  "root_cause": "A Central Bank of Nigeria circular issued 12-13 March 2026 restricts updates to the phone number linked to a Bank Verification Number (BVN) to a single change for the lifetime of the BVN, effective 1 May 2026, with no publicly documented exception process. The Data Privacy Lawyers Association sued the CBN at the Federal High Court, Kaduna (filed 8 April 2026), arguing telecoms routinely recycle lost, stolen, or deactivated numbers, and that anyone who has already used their one change - or whose old number is later reassigned - has no structured appeal path, leaving their transaction alerts and OTPs exposed to whoever now holds that number.",
  "root_cause_type": "generic",
  "root_cause_zh": "",
  "versions": [
    {
      "version": "any",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Tell someone their BVN-linked phone number can simply be updated again after they have already used their one lifetime change",
      "why_fails": "Per the CBN circular effective 1 May 2026 (reported by TechCabal and explained by fact-checking outlet Dubawa), phone-number changes on a BVN are capped at one per lifetime; a Federal High Court suit filed 8 April 2026 by the Data Privacy Lawyers Association states in its affidavit that there is 'an absence of a structured appeal process for device loss or errors', meaning no confirmed second-change route existed as of that filing.",
      "fail_rate": 0.6,
      "condition": "Since 1 May 2026",
      "sources": [
        "https://techcabal.com/2026/03/13/cbn-restricts-bvn-phone-number-changes-to-once-in-a-lifetime/",
        "https://www.icirnigeria.org/bvn-restriction-data-privacy-lawyers-sue-cbn-over-one-time-phone-number-update-rule/"
      ]
    },
    {
      "action": "Treat losing a phone or having an old Nigerian SIM number reassigned by the carrier as a minor, easily-fixed inconvenience for someone with a BVN",
      "why_fails": "The Data Privacy Lawyers Association's Federal High Court filing (Kaduna Judicial Division, 8 April 2026) specifically warns that telecom providers 'frequently reassign numbers that have been lost, stolen, or deactivated'; once a customer's one lifetime BVN phone-number update is used, or the number is compromised afterward, transaction alerts and One-Time Passwords sent to that number become interceptable by whoever now holds it, with no appeal mechanism documented at the time of filing.",
      "fail_rate": 0.55,
      "condition": "Already used the one lifetime change, or whose registered SIM has lapsed",
      "sources": [
        "https://www.icirnigeria.org/bvn-restriction-data-privacy-lawyers-sue-cbn-over-one-time-phone-number-update-rule/"
      ]
    }
  ],
  "workarounds": [
    {
      "action": "Only update a BVN-linked phone number once you are certain it is your long-term number, and keep that SIM active rather than letting it lapse or go dormant",
      "success_rate": 0.7,
      "how": "Banks and NIBSS process the update in-branch or via bank apps; because only one change is allowed for the lifetime of the BVN (per the March 2026 CBN circular), treat the update as a rare, deliberate action rather than a routine settings change.",
      "condition": "Has not yet used the lifetime BVN phone-number update",
      "sources": [
        "https://dubawa.org/5-new-bvn-rules-nigerians-must-know-before-may-1/"
      ]
    },
    {
      "action": "If the one-time change is already used and the number is later lost or reassigned, do not assume a routine fix exists - contact the bank/CBN directly and watch the outcome of the Data Privacy Lawyers Association's Federal High Court suit (filed 8 April 2026, Kaduna Judicial Division)",
      "success_rate": 0.3,
      "how": "",
      "condition": "Already used the one-time change and lost access to the registered number",
      "sources": [
        "https://www.icirnigeria.org/bvn-restriction-data-privacy-lawyers-sue-cbn-over-one-time-phone-number-update-rule/"
      ]
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": [
      "banking/bvn-enrollment-requires-in-person-biometrics/ng"
    ]
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.7,
  "fix_success_rate": 0.55,
  "resolvable": "partial",
  "first_seen": "2026-08-30",
  "last_confirmed": "2026-08-30",
  "last_updated": "2026-08-30",
  "evidence_count": 3,
  "tags": [],
  "locale": "en",
  "aliases": [
    "policy/bvn-phone-number-one-time-change/ng"
  ]
}