How do I get a PAC code from O2?

Text PAC to 65075. It is free and O2 says the code arrives within 60 seconds. You can also request it in My O2 under Manage details, then Thinking of leaving O2?, or by contacting O2. Give the code to your new network. Checked on O2's own help page on 25 September 2026.

Why can I not get an O2 PAC code by text?

O2 says the text route does not work if you have a linked Apple Watch, and that with more than one number on the account you should use My O2 or contact them instead.

Can I get an O2 PAC code after I have left?

Yes. O2 says you have up to 30 days after leaving to request a PAC, in an O2 store or by getting in touch, and the code is valid for 30 days from the date it is issued.

What number do I call to leave O2?

O2 publishes 0344 809 0202 for Pay Monthly customers from a landline, or 202 free from an O2 mobile. Lines are open Monday to Friday 8am to 9pm, Saturday 8am to 8pm and Sunday 8am to 6pm. The retention team opens later on Sundays, at 10am.

How can I find out what leaving O2 will cost?

Text INFO to 85075, or check My O2, and O2 returns an estimate of your charges or credit. For SIM Only, O2 adds up the remaining monthly charges including VAT and deducts 4%. Its own example is a £21 contract cancelled after six of twelve months costing £120.96.

Do I still owe for my phone if I leave O2?

On O2 Refresh, yes. There is no early termination charge on the airtime plan, but the device plan balance is still owed. If you end the airtime within the first 24 months the device plan must be paid off in full; after 24 months the plans unlink and you can keep paying monthly.

How to get an O2 PAC code, and the number to call about leaving

Quick answer

How to get an O2 PAC code

You want to	Do this	From O2’s own help page
Keep your number	Text PAC to 65075	Free. O2 says the code arrives within 60 seconds
Leave without your number	Text STAC to 75075	Free. Same 60 seconds
Check the cost first	Text INFO to 85075	Returns an estimate of any early termination charge or credit

Give the code to your new network, not to O2. The new network uses it to move your number across. General

When the text route will not work: O2 says texting is not possible with a linked Apple Watch, and if you have more than one number on the account you should use My O2 or contact them instead. In My O2, open the My O2 menu, choose Manage details, scroll to “Thinking of leaving O2?” and choose Request your code. Verified

Already left O2? You can still ask for a PAC for up to 30 days after leaving, in an O2 store or by contacting them. A code is valid for 30 days from the date it is issued. Verified

Pay Monthly customer service

0344 809 0202

Verified Published on O2’s own contact page as the Pay Monthly customer service number from a landline. Pay Monthly lines open Monday to Friday 8am–9pm, Saturday 8am–8pm and Sunday 8am–6pm. Checked 25 September 2026. Charged at your standard landline rate; included in most mobile call allowances.

Getting to the right team

We don't yet know how O2's phone menu is structured, so we're not going to guess. If you work it out, we'd like to hear from you.

Before you call

What to know first

Find out what it will cost before you ring. O2 publishes a self-serve check: text INFO to 85075, or look in My O2, and it returns an estimate of your charges or credit. Going in knowing the number is worth more than any script. Verified

The retention queue keeps different hours to the main line. O2 lists it as Monday to Saturday 8am–8pm but Sunday 10am–6pm, two hours later than general customer service. Ring on a Sunday morning and you will reach the wrong team or nobody. Verified

O2 does not publish a phone-menu path for cancelling, so we are not going to invent one. It does say you will be asked for your security answer before you speak to anyone, which you can set in the My O2 app beforehand under Settings, then Security and Privacy. Verified

The codes

How to actually leave

Keep your numberText PAC to 65075

A PAC ports your number to the new provider. Give it to them, not to O2.

Start freshText STAC to 75075

A STAC closes the account without taking your number with you.

O2 says the code arrives within 60 seconds. The text route does not work with a linked Apple Watch, and with more than one number on the account O2 asks you to use My O2 or contact them instead. You can still request a PAC up to 30 days after leaving, and a code is valid for 30 days from issue. Verified

What it costs

Notice, exit fees and the handset

Notice30 days

Unlike Three, O2 does require 30 days’ notice, given through My O2 or by contacting them. Any overdue charges and any device plan must be settled before you leave.

Leaving earlySIM Only: the rest of your term, minus 4%.

O2 adds up the remaining monthly airtime charges including VAT, then deducts 4% for early receipt. Its own worked example: a 12-month contract at £21 a month, cancelled after six months, is £126 less 4%, so £120.96. Your final bill arrives 14 days after disconnection. O2 says not to cancel the Direct Debit until that bill is paid.

Your handsetOn O2 Refresh the handset is a separate debt.

O2 states that on Refresh you pay no early termination charge on the airtime plan, but any outstanding device plan balance is still owed. End the airtime inside the first 24 months and the device plan must be settled in full; after 24 months the two unlink and you can keep paying monthly instead.

Your rights

What you're entitled to

Your code has to arrive within a minute. For residential customers Ofcom requires the losing provider to send a PAC or STAC no later than one minute after the request. Beware of guides quoting two hours or two working days; those are the rules for business customers. Verified
Text is not the only route they must offer. Providers must give at least three free ways to get a code: by text, online through your account, and by phone. Text and online have to be available at all times. Codes last 30 days. Verified
Switching kills the notice period. If you move using a code, your old contract terminates on the working day the switch completes, and your provider must not bill you for any notice period running past that date. This is the single most valuable rule here. It does not, however, cancel an early termination charge if you are still inside your minimum term. Verified
They must tell you what you still owe on the handset. The switching information sent with your code must say whether the handset sits on a separate contract, and either what is still payable on it after you move or the date you stop paying. It must also give your total final charge as a single figure. Verified
The switch itself is quick, and free. Porting must complete within one working day, any loss of service must not exceed one working day, and no charge may be made for taking your number with you. Your number stays portable for at least a month after you leave. Verified

One rule is worth more than any script: switch with a code and your provider cannot bill you for a notice period beyond the switch date. The full explainer, including what it does not cover, is here.

Where this comes from

Claim	Source	Checked
Number 0344 809 0202, 202 from an O2 mobile, and Pay Monthly hours	O2’s own contact page (o2.co.uk/contactus)	25 September 2026
Retention queue hours, including the later Sunday opening; the security answer and where to set it	O2’s own contact page	25 September 2026
PAC to 65075, STAC to 75075, codes within 60 seconds; the Apple Watch and multiple-number exceptions; the My O2 route; PAC up to 30 days after leaving, valid 30 days	O2’s own Leaving O2 help page (o2.co.uk/help/account/joining-and-leaving-o2/leaving-o2)	25 September 2026
30 days’ notice requirement	O2’s own Leaving O2 page	25 September 2026
Early termination calculation, the 4% deduction and O2’s worked example; final bill 14 days after disconnection	O2’s own Leaving O2 page	25 September 2026
O2 Refresh airtime and device plan treatment	O2’s own Leaving O2 page	25 September 2026
Text INFO to 85075 for a cost estimate	O2’s own Leaving O2 page	25 September 2026
A phone-menu option for “thinking of leaving O2”	Appears in community forum posts only; not published by O2	Unverified

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O2: your PAC code, the leaving number and what it costs