Cancel Atlas

The Cancellation Friction Index

Documented-Policy tier only. This score rates how clearly NOS's public cancellation page is published (cited, dated) — opinion grounded in disclosed facts, not a finding about the real cancel experience, and not legal advice. The behavioural Verified-Flow grade is pending.

58/ 100 · C

Telecom & ISP · PT

How hard is it to cancel NOS?

NOS scores 58/100 (grade C) for how clearly it documents cancellation in the PT — a partially documented cancellation policy with notable gaps. Cancellation is available via phone, in person, postal mail, email, online (self-serve).

Last reviewed 2026-06-05 · Documented-Policy tier · grade C

NOS Portugal subscribers cancel by phone (931 699 000 or 16990, select 'Desativação'), at any NOS store in person, by post to Apartado 52111, EC Campo Grande, 1721-501 Lisboa, or by submitting a written cessation form via cliente.nos.pt. Under Portuguese law (Lei 16/2022 and ANACOM regulation), consumers may also use the official government Plataforma de Cessação de Contratos (cessacaodecontratos.pt) to submit termination requests. The effective notice rule requires submission at least 10 days before the billing period end to avoid being charged for an additional month; the maximum notice period operators can require is 1 month under ANACOM rules. Early termination during a loyalty/commitment period incurs a penalty that varies by offer and remaining months, checkable in the MyNOS app. Refund or proration terms are not explicitly disclosed; customers receive a final bill covering the period up to service deactivation. Equipment must be returned within 30 days post-deactivation or an indemnification fee applies.

How to cancel NOS

  • Channels: phone, in person, postal mail, email, online (self-serve)
  • Official cancellation page: https://www.nos.pt/particulares/ajuda/a-minha-conta/gerir-o-contrato/cancelar-o-contrato/como-cancelar-servico
  • Pause/freeze: available — Temporary service suspension is available for specific circumstances including serious illness, care facility admission, unemployment, relocation abroad, or imprisonment, with supporting documentation required. Suspension waives the monthly fee during the suspension period.
  • Account/data deletion: GDPR right to erasure available. Requests can be submitted by email to [email protected], by phone at 800 109 300 or 16101, or by post to NOS – Privacidade, Rua Actor António Silva n.º 9, Campo Grande, 1600-404 Lisboa. NOS must respond within 30 days; requests may be denied where legal retention obligations apply (e.g. tax data retained 10 years, crime investigation data 1 year). https://www.nos.pt/pt/institucional/sustentabilidade/gestao-etica-e-responsavel/seguranca-e-privacidade/politica-privacidade-nos/direitos-dos-titulares-dos-dados-pessoais

Evidence

Scope & fairness

This is the Documented-Policy tier: it measures how clearly the cancellation policy is published (cited, dated facts), not the behavioural experience of cancelling (Verified-Flow audit pending). Every company is scored on the same five dimensions with the same published weights — scores cannot be bought or removed. It is opinion grounded in disclosed facts, and not legal advice.

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Cite this. Cancel Atlas (2026). “NOS — Cancellation Friction Index (PT).” CES-1.1. https://www.cancelatlas.com/c/nos-pt (CC BY-SA 4.0).

See NOS in the full index -> · How we score · Open data