Cancellation guide

How to cancel O2

A clear, step-by-step guide to cancelling your O2 mobile, plus the things worth checking before you leave.

Before you cancel

  • You may be in a minimum contract, so leaving early can trigger an early-exit charge. Ask for the exact figure before you agree to anything.
  • Expect to be offered a retention discount or loyalty deal to make you stay. If you're sure you want to cancel, stand your ground.
  • There may be a notice period, so you can be billed for a short while after you ask to leave. Cancel as early as you can.
  • Cancel from the account you actually pay with, and make sure you're the billing owner before you start.
  • Always get your cancellation confirmed in writing and keep it.

How to cancel O2, step by step

  1. Decide if you're keeping your number: PAC to keep it, STAC to leave it behind. Text PAC to 65075, or STAC to 75075, for a code within 60 seconds (or request it in My O2 under Manage details, or by phone/in store).
  2. Give the code to your new network, with a PAC/STAC there's no 30 days' notice and you're billed only up to the date the code is used.
  3. If you're not switching networks, give 30 days' notice by signing in to My O2 or by calling 202 (Pay Monthly) or 4445 (Pay As You Go); you pay for that 30-day notice period.
  4. Check your minimum term first, early-termination charges apply if you're still in it.
  5. Your final bill arrives about 14 days after disconnection; you can cancel the Direct Debit after it's paid.

Ways to cancel

By phone
202 (from O2 phone) / 0344 809 0202 (other phones)
Online
o2.co.uk
By post
Telefónica UK Ltd, 260 Bath Road, Slough, SL1 4DX, UK

Notice, fees & cooling-off

Notice period
30-day notice for a standard cancellation (no switch); none when you port out via PAC/STAC (ends when the new network activates). 14-day cooling-off on new contracts.
Early-exit charge
Early Termination Charges apply if you leave within the minimum term. On O2 Refresh, airtime ETC is waived but you must pay off the full remaining Device Plan balance. Penalty-free exit if O2 raises prices beyond contracted terms (30 days to act).

5 Jul 2026