Guides › Broadband, Phone and Mobile Contracts › How to Cancel O2
How to Cancel O2
O2 says it needs 30 days' notice to cancel, through My O2 or by contacting it (202 free from an O2 Pay Monthly phone). To switch network, text PAC to 65075 or STAC to 75075. Any Device Plan must still be paid off. Consumer Protection UK is independent and is not connected to O2.
At a Glance
Your Rights
What the rules say, with a link to the official source for each.
Leaving O2
Notice
O2 says it needs 30 days' notice to cancel, through My O2 or by contacting it (free on 202 from Pay Monthly or 4445 from Pay As You Go). To switch, text PAC to 65075 or STAC to 75075; you should get the code within 60 seconds. If you leave without switching and do not want your number, contact O2: the contract stays active until you switch. source
Device Plans
O2 says you must pay off any Device Plan. On O2 Refresh you can keep paying in instalments or pay the balance in full, and cancelling the airtime plan on Refresh means no early termination charges on the airtime. source
Charges and Your Final Bill
Early Termination Charges
If you cancel before the end of your minimum term, early termination charges may apply. Outside O2 Refresh, the charge covers the remaining months of the minimum term. For SIM-only and Standard Plan contracts it is the monthly tariff times the remaining months, minus 4%. Your final bill comes 14 days after you are disconnected. source
Free Dispute Resolution
If your complaint is not resolved, you can use a free alternative dispute resolution (ADR) scheme once six weeks have passed since your initial complaint, or earlier if you receive a deadlock letter. The two schemes are the Communications and Internet Services Adjudication Scheme (CISAS) and the Communications Ombudsman. All providers must belong to one. source
Time Limits to Know
Miss a deadline and you can lose a right. Check the dates on your own paperwork.
- 30 daysO2 notice to cancelThrough My O2 or by contacting O2
- 60 secondsO2 sends your PAC or STACAfter you text 65075 or 75075
- 6 weeksWait before going to a free ADR schemeSix weeks from your complaint, or earlier with a deadlock letter
Steps to Take
Step 1 of 5
Check whether you are still in your minimum term: charges may apply.
Step 2 of 5
To switch network, text PAC to 65075 (or STAC to 75075) and give the code to your new provider.
Step 3 of 5
To leave without switching, give O2 30 days' notice in My O2 or by calling.
Step 4 of 5
Plan how you will pay off any Device Plan.
Step 5 of 5
Check your final bill. If it is wrong, complain to O2, then go to CISAS after 6 weeks.
(Tap the numbers to reveal steps)
Where to Go If It Is Not Put Right
Your options, in order, and when each one applies.
Your Provider's Complaints Team
Always start here, in writing, and keep a copy.
CISAS or the Communications Ombudsman (ADR)
Six weeks after your complaint, or when you receive a deadlock letter. Free for you. Your provider will say which scheme it belongs to.
Good to Know
Small things that make your complaint stronger.
Complaints about O2 device plans (finance) go to the Financial Ombudsman Service, not CISAS.
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If you would like one of our team to look at your problem, our initial case review is free. We cannot guarantee any outcome and we do not give legal advice.
Lead reviewer
Luke Marley
Founder and Lead Reviewer
Luke founded CPUK in 2026 after seeing how hard it is for ordinary people to get problems with companies put right. He oversees our guides and checks them against official sources.
Research by Katie Burt, Co-founder and Operations Lead (17 years in the care sector, including managing services for vulnerable adults), and the CPUK Research Team. Researched with AI-assisted research tools, then checked and corrected by our team.
Last checked: 13 October 2026. We are not paid by the companies we write about. Adverts never affect our guidance. Read our editorial policy.
Sources and official links
- o2.co.uk/help/account/joining-and-leaving-o2/leaving-o2 Checked 13 October 2026
- ofcom.org.uk/complaints/complain-about-phones-or-internet-services/contracts Checked 12 October 2026