My Mobiles

Switch from Vodafone to O2

Keep your phone number when you switch from Vodafone to O2. Here's how in 3 simple steps.

Updated July 2026

Switching from Vodafone to O2 takes you to the Telefónica-owned network, which serves over 30 million UK customers and is known for its O2 Priority rewards scheme offering exclusive deals and early access to event tickets. O2 has invested heavily in 5G expansion and offers a strong range of flexible tariffs. The PAC code switch is simple and keeps your number intact.

Important Warning

Do NOT cancel your contract manually. If you cancel before transferring your number, you will lose it permanently. Your old contract will automatically cancel once the transfer completes.

Pre-Switch Checklist

  • Back up your data: Contacts, voicemails, and saved messages won't transfer.
  • Unlock your phone: Ensure it's not locked to your old network if you plan to keep using it.
  • Check Early Termination Fees: Text INFO to 85075 to see if you'll incur charges for leaving early.

How to Switch from Vodafone to O2

1

Get your PAC code from Vodafone

Text PAC to 65075 from your Vodafone phone to receive your PAC code by SMS straight away. Alternatively, call 191 from your Vodafone handset, dial 0333 304 0191 from any other phone, or log into your account at vodafone.co.uk to request the code online. It stays valid for 30 days.

2

Give your PAC to O2

Choose your O2 plan at o2.co.uk, visit an O2 store, or call 0344 809 0202. When signing up, indicate that you want to keep your current number and provide the PAC code you received from Vodafone. O2 will initiate the number transfer once your new SIM is activated.

3

Wait 1 working day

Your number will move from Vodafone to O2 within 1 working day, often completing in just a few hours. An SMS confirmation will arrive on your new O2 SIM when the port is finished. Your Vodafone contract is automatically cancelled at that moment.

Transfer Cut-off Times: Submitting your PAC code before 5:30 PM usually means your number will transfer the next working day. Submitting it after 5:30 PM or on weekends/bank holidays will add an extra working day to the process.

Final Bill: You'll receive a final bill from Vodafone shortly after the transfer is complete. This covers your usage up to the date of the switch.

Things to Check Before Switching

Verify your Vodafone contract end date and any early termination charges that may apply. If you use Vodafone Cloud for photo backups, download your files before switching. Check that your phone is unlocked to work on the O2 network. Also consider whether leaving Vodafone will affect any broadband or home bundle discounts.

Different Network Coverage

Vodafone and O2 use completely different network infrastructures with different mast locations. Coverage quality can vary between the two, particularly outside urban areas. O2's 5G footprint is expanding but concentrated in major cities. Check O2's coverage at o2.co.uk/coveragechecker to make sure you will have reliable service where you need it.

Ready to Switch to O2?

Compare the latest O2 phone deals and find the best plan for you.

Vodafone to O2 FAQ

What is O2 Priority and is it worth switching for?
O2 Priority is a loyalty programme that gives O2 customers exclusive access to presale tickets for concerts and events, plus weekly rewards from high-street brands. It is available to all O2 customers at no extra cost through the O2 app.
Do I need to pay Vodafone anything when I switch to O2?
If your Vodafone contract has ended and you are on a rolling monthly plan, you can leave without penalty. If you are mid-contract, you will pay an early termination fee. Any outstanding device payments must also be settled.
How do I unlock my Vodafone phone for O2?
Vodafone phones purchased after December 2021 are already unlocked. For older devices, you can request a free unlock online through your Vodafone account or by calling 191. The unlock usually takes a few days to process.