Transfer A Phone Number From EE to O2: Step-By-Step Instructions

Switching from EE to O2? It's a straightforward process to keep your existing phone number.


Step 1: Obtain a PAC Code from EE

The first step is to contact EE to obtain your Porting Authorisation Code (PAC Code).

You can get a PAC Code from EE by calling 150 on your EE handset. Alternatively, dial 07953 966 250 from any other phone.

You can request a PAC Code over the phone at any time during EE's opening hours:

Monday - Friday8.00am - 8.00pm
An extended service costing 50p/call is available between 8pm-10pm on weekdays.
Saturday8.00am - 6.00pm
An extended service costing 50p/call is available between 6pm-8pm on the weekend.
Sunday8.00am - 6.00pm
An extended service costing 50p/call is available between 6pm-8pm on the weekend.
  • A PAC Code is 9 digits long and follows the format ABC 123 456.
  • EE must provide a PAC code within 2 hours of your request. If they don't, they must provide a valid reason for why the PAC Code can't be issued. Your right to a PAC code is enshrined within Ofcom's "General Conditions of Entitlement" (May 2015, clause 18).
  • Your PAC Code is valid for 30 days. If you don't use it during this time, the PAC code will expire and you'll need to request a new one.
  • You shouldn't close your account at EE: it'll end automatically when your phone number is transferred to O2.

Step 2: Order your new phone or SIM card from O2's website

You should now order 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 on O2's website.

O2 will assign you with a temporary phone number during the transition process. This will allow you to test out the service before you finally transfer your phone number to O2.

Step 3: Give the PAC Code to O2

Once your new phone or SIM card arrives from O2, switch it on and make sure everything's working properly. If you need to return/replace the new phone or SIM card, please do this before the phone number transfer.

Once you're happy to continue with the phone number transfer, contact O2 and provide them with your PAC Code.

Your PAC Code should be entered on O2's online form. You can also provide your PAC Code to O2 over the phone:

If you're joining O2 Pay Monthly, you can submit your PAC Code by calling 202 on your O2 handset. Alternatively, call 0344 8090202 from any other phone.

Alternatively, if you're joining O2 Pay As You Go, submit your PAC Code by calling 4445 (0344 8090222 if you're calling from another network).

Providing your PAC Code to O2

The PAC Code should be submitted through a form on O2's website.

  • You must provide the PAC Code to O2 within 30 days of it being issued by EE. If the PAC Code has already expired, you'll need to return to step 1 and request a new PAC Code from EE.
  • EE Pay As You Go customers: Try to use up your remaining credit as it can't be transferred to O2.

Step 4: Phone Number Transferred (Next Working Day)

Once you've provided a PAC code to O2, your phone number transfer will normally be scheduled for the next working day (Monday to Friday only, excluding English bank holidays).

On the day of the transfer, you'll momentarily lose coverage on both mobile networks. When this happens, restart your handset on O2. You should find that the O2 phone or SIM card will now associated with your original phone number.

  • If you see an error message (e.g. "SIM card registration failed"), this means it's time to restart your phone.
  • Once the phone number has been transferred to O2, your account on EE will automatically be closed. You'll receive a final bill from EE for any outstanding charges.

Get the 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 from EE to O2. The comments below are from people who've made the same transfer. You can add your own comments here.

To view all 1205 comments about transferring a phone number, please visit the main PAC Code article.

  1. Stephen said:

    Hi Ken.

    My wife & I live in Australia and we both have pay as you go SIMs with EE for when we’re in the UK.

    What we do is leave an amount in each phone’s account and before we arrive in the UK we top-up (if necessary) and purchase a 20 pound “Everything Pack” for the period that we’re in the UK. Every few months we turn the phones in here in Australia and send an SMS just to keep the accounts alive.

    What we’ve found is that the area we tend to spend the most time in has some serious dead-spots for the EE network and would like to change to the O2 network which has very good coverage for the area we’re in.

    Is there a way we can move our pay as you go services to O2 (keeping the same numbers) and what would you suggest as a substitute for the EE “Everything Pack” that we usually purchase?



    1. Ken replied:

      Hi Stephen,
      Thanks for your comment. Yes, of course, you can easily move your Pay As You Go service over to another mobile network whilst keeping the same number you already as. The only limitation is you won’t be able to transfer Pay As You Go credit, so you’ll need to use this up before moving to another network.
      To move your phone number from EE to O2, you can following the instructions on this page the next time you’re in the UK. On O2 Pay As You Go, you can buy a Big Bundle which is their equivalent to EE’s Everything Packs (e.g. you can get 750 minutes, 2000 texts and 2GB data for £15/month). If you’d like coverage from O2, it may also be worth investigating giffgaff (they’ll give you the exact same coverage as O2 but with slightly lower prices).
      Hope this helps!

      1. Stephen replied:


        appreciate the response, thank you.

        One further question, does the credit on your O2 pay-as-you-go account have an expiry date after which time the phone number ceases to operate? As mentioned in my initial inquiry, we turn our phones on here in Australia and send an SMS just to show EE we’re still active.



        1. Ken replied:

          Hi Stephen,
          No worries at all – glad to be able to help out!
          There’s more information here on the topic of credit expiry. If you have a Big Bundle, the allowances will obviously expire after one month. However, if it’s just Pay As You Go credit, there’s no expiry providing you use your SIM card at least once every six months (this is the same as the policy on EE).
          Hope this helps!

          1. Stephen replied:

            Hi Ken.

            just a follow question on porting from EE to O2.

            If after getting a PAC code, would it be easier to go into an O2 store and do the porting over the counter?



          2. Ken replied:

            Hi Stephen,
            It shouldn’t make any difference whether you submit the PAC Code to O2 via their online form, by calling customer services or in-person at their store. It all goes into the same system, and the transfer still happens on the next working day. Personally, I’d probably do it online for convenience (it’s possible if you go in to the store, they’ll just submit your PAC Code through the same online form!).
            Hope this helps,

  2. Hayley said:

    Hi, I informed EE that I was leaving and requested by pac code which they sent in the post. Before I had even used the code EE charged my account £36 for requesting the code and giving them my 30 days notice.
    When I had originally contacted EE they never informed me of this charge and then went on to say that it was because I had requested the pac code I had to pay for it.
    After discussions with them they finally agreed to refund me the money as at no point was I informed of this charge.
    I wasn’t in a contract with them and on the bill it said penalty charge??????
    I am now worried that although i am receiving texts and phonecalls on my new O2 phone, my old phone is still able to call out as I have tested it and I don’t want them to charge me for it.
    EE is a nightmare!!!!!
    I’m still waiting for the refund so watch this space as to whether I will have to call them again!!

    Thanks for the info though it has helped.

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