Transfer A Phone Number Within O2: Step-By-Step Instructions

Upgrading to a new handset or SIM card on O2? You won't need a PAC Code to keep your current phone number.


Step 1: Order your new phone or SIM card from O2's website

As you're staying on O2, it's not necessary to obtain a PAC Code. Instead, you can process your phone number transfer internally inside of O2.

Start by ordering your new phone or SIM card using the O2 website. Please select the type of tariff you're intending to move to:

For a full list of available tariffs and the latest O2 deals, please refer to this page.

Step 2: Contact O2 To Transfer Your Phone Number

After receiving your new phone or SIM card, please contact O2 to transfer your phone number to the new plan. You can do this by calling 202 from your O2 handset. Alternatively, dial 0344 8090202 from any other phone.

You can contact O2 at any time during their opening hours:

Monday - Friday8.00am - 9.00pm
Saturday8.00am - 8.00pm
Sunday8.00am - 6.00pm

View Latest Deals from O2 »

Any Other Questions?

In case of any problems during the transfer of your phone number, you should contact your new mobile network (O2) with details of the problem.

If you have any other questions on using a PAC Code, please see my in-depth guide to transferring your phone number between networks. You can also read comments from other visitors of this site.

« Full Article: "PAC Codes - How to transfer your mobile number when switching networks"

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About Ken

Ken Lo

My passion is helping people to get the most out of their mobile phone. I've been blogging at Ken's Tech Tips since 2005.

Aside from writing about mobile technology, my interests are in software development, digital marketing and physics. Outside of the blog, I work with numerous technology companies helping them to explain their product and helping them to market it to consumers. Please get in touch for more information.

Your Comments

We'd love to hear your comments on transferring a phone number within O2. The comments below are from people who've made the same transfer. You can add your own comments here.

To view all 1194 comments about transferring a phone number, please visit the main PAC Code article.

  1. Brittany said:


    Thanks for this article. I’ve got an additional question. I’ve got an O2 phone contract under another person’s name. I would like to open my own O2 contract and transfer ownership of the phone number to my new contract under my name. Can I do this by obtaining the PAC code for the original phone number, then use that to migrate my phone number to the new contract? It will be with the same carrier, just under different account owners (and a new phone).

    Thank you!

    1. Ken replied:

      Hi Brittany,
      Thanks for your comment. You have two options with regards to taking over the phone number:
      1) You can ask the account holder to contact O2 to see whether it might be possible to transfer the existing contract into your name. This would probably be the most straightforward, as you can stay on the same plan as before and you’ll also avoid any early termination fees, if applicable.
      2) If that’s not possible, then you can of course sign up for O2 with a brand new contract. You’ll need to call up O2 Customer Services to get your phone number moved over (as a PAC Code can only be used when transferring a phone number between two different mobile networks). Be warned that you may need to pay an early termination fee, if the original contract is being ended early.
      Hope this helps,

  2. jim said:

    My o2 contract is up in 2 months and was wondering can i switch my current number to a new phone ( same network ) if i get a new phone through another shop .

    1. Ken replied:

      Hi Jim,

      Yep! Just call up O2 customer services and ask them to move it over 🙂


      1. Darren replied:

        Will Vodafone do the same thing? I asked a few years ago and their customer services department told me they wouldn't do it. Just wondering whether that was a case of talking to the wrong (least helpful) person, or whether that is in fact vodafone's policy.

  3. Alex said:

    Hi Ken, a slight weird one here. I was with o2 and the contract was done on the o2 store. I want to take out a new contract with the carphone warehouse but still remain on o2. Do I need a PAC code for this? Alex

    1. Ken replied:

      Hi Alex,

      Nope you don't – same process as moving from O2 to O2. It doesn't matter where you buy your phone from 🙂 When you receive your new phone/SIM from CPW, give O2 a call and ask them to transfer your existing phone number onto your new SIM card.



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