Three PAC Code: Keep Your Phone Number When Changing Networks

Whether you're joining Three or leaving for a different network, it's a straightforward process to keep your old phone number.

Three PAC CodeIf you're leaving Three and joining another network or if you're leaving another network in order to join Three, it's easy to keep your old phone number. All you need to do is to request a PAC Code: it's totally free and the entire process of transferring your phone number should normally take no longer than one working day.

For detailed instructions, please choose the option that best applies to you:

Leaving Three For Another Network


If you're leaving Three and joining another network, you can take your phone number with you.

Start by asking Three to issue you with a PAC Code. You can get a PAC Code from Three by calling 333 on your Three handset. Alternatively, dial 0333 338 1001 from any other phone.

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

Monday - Friday8.00am - 8.00pm
Saturday9.00am - 6.00pm
Sunday9.00am - 6.00pm

It's always free to get a PAC Code from Three (it's your legal entitlement). After getting your Three PAC Code, you'll need to provide it to your new network operator. For detailed instructions, please select your new network operator from the dropdown menu below:

PAC Code Finder: How to use your Three PAC Code

Your new network provider:

Joining Three From Another Network


If you're joining Three from another network, you should ask your old network to provide you with a PAC Code. The PAC Code will allow you to transfer your number to Three.

After getting the PAC Code, you should order your new handset or SIM card directly from Three's website. For more information, please select the type of tariff you're wanting to move to:

For a full list of the latest Three deals, please see this page on Three's website.

Get the Latest Deals from Three »

Once Your New Phone Arrives...

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

Once you're happy to continue with the transfer, your PAC Code should be entered on Three's online form. Alternatively, you can give the PAC Code to Three by calling 333 on your Three handset. You can also call 0333 338 1001 from any other phone.

Providing your PAC Code to Three

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

If your PAC Code is provided before 5.00pm, your phone number transfer will normally be scheduled for the next working day (Monday to Friday only, excluding English bank holidays). For PAC Codes submitted after the 5.00pm cut-off, you'll need to wait one extra working day for your number to be transferred.

Upgrading Your Plan On Three


If you're simply upgrading to a newer handset or tariff, it's not necessary to use a Three PAC Code. You can simply upgrade via Three's website. For more information, please select the type of tariff you're planning to move to:

More Information

For more information, please see the Three website. You can also read our full guide on using a PAC Code: there's frequently asked questions amongst other tips for transferring your phone number.

For discussion, please see the comments on this page. They show other people's experiences either when using a Three PAC Code or when transferring their phone number from another network to Three.

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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 would love to hear your comments: either about using a Three PAC Code or transferring your phone number from another network to Three. The comments below are all from people who've done the same thing in the past. You can contribute by adding your own comments here.

To see all 1181 comments about transferring a phone number, please see the main PAC Codes article.

  1. Steve said:

    Hi I have transferred from EE to 3 contract to SIM only and took my old number with me , everything has changed over to my old number after giving 3 PAC code , only problem is anyone with an iPhone is getting txts from my 3 temporary number and when they txt old number it’s only sending as a text message not iMessage ! Any ideas what’s wrong please

    Steve transferred a phone number from EE to Three.

    1. Ken replied:

      Hi Steve,
      Thanks for your comment. I believe the information here should help you with regards to fixing iMessage/FaceTime?
      Many thanks,

  2. A said:

    I’ve already ended my contract with EE and have joined three HOW do I get my PAC code from EE

    A transferred a phone number from EE to Three.

    1. Ken replied:

      Hi there,
      Unfortunately, it’s no longer possible to obtain a PAC Code from EE once your account has been closed. If your account was closed without a PAC Code being actioned, it’s likely the phone number has now been lost. If you like, however, you could contact EE using the details here to ask them whether they’re able to restore your number.

  3. JayB said:

    Hey Ken, really useful set of information.

    For many reasons I have two monthly SIM cards and I’m looking to settle on one provider now.

    PAC typically refers to transferring a number into a new contract or agreement. But I can find no data on if PAC transfers in have a time limit.

    I know PAC codes have a 30-day validity once requested.

    So can you bring over a number to an account that has been running for a long time ?

    In this case its Vodafone to Three

    JayB transferred a phone number from Vodafone to Three.

    1. Ken replied:

      Hi JayB,
      Thanks for your comment. As you say, PAC Codes have a 30-day expiry from the date on which you request them (if it’s gone more than 30 days, you can simply request a new PAC). There’s no limit on how long you could have been using the phone number on your old network (whether it’s been 10 days or 10 years, you’re still able to request a PAC Code in the same way to move your phone number to another network).
      Hope this helps,

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