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

BT PAC CodeIf you're leaving BT and joining another network or if you're leaving another network in order to join BT, 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 BT For Another Network

BT Mobile

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

Start by asking BT to issue you with a PAC Code. You can get a PAC Code from BT Mobile by calling 150 on your BT Mobile handset. Alternatively, dial 0800 800 150 from any other phone.

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

Monday - Friday8.00am - 9.00pm
Saturday8.00am - 8.00pm
Sunday9.00am - 6.00pm

It's always free to get a PAC Code from BT Mobile (it's your legal entitlement). After getting your BT 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 BT PAC Code

Your new network provider:

Joining BT From Another Network

BT Mobile

If you're joining BT Mobile 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 BT Mobile.

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

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

Get the Latest Deals from BT Mobile →

Once Your New Phone Arrives...

Once your new phone or SIM card arrives from BT Mobile, 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 BT Mobile's online form. Alternatively, you can give the PAC Code to BT Mobile by calling 150 on your BT Mobile handset. You can also call 0800 800 150 from any other phone.

If your PAC Code is provided before 3.00pm, 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 3.00pm cut-off, you'll need to wait one extra working day for your number to be transferred.

Upgrading Your Plan On BT

BT Mobile
BT Mobile

If you're simply upgrading to a newer handset or tariff, it's not necessary to use a BT Mobile PAC Code. You can simply upgrade via BT Mobile'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 BT Mobile 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 BT PAC Code or when transferring their phone number from another network to BT Mobile.

Your Comments 1,620 so far

We would love to hear your comments: either about using a BT Mobile PAC Code or transferring your phone number from another network to BT Mobile. 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 1620 comments about transferring a phone number, please see the main PAC Codes article.

  • Hi I’m with Vodafone at the moment and just got a sim only deal with bt and want to keep my number .
    If I put the bt sim in my phone and use the new number to check the coverage for a few days can I then use a pac code to change the number.

    Adrian transferred a phone number from Vodafone to BT Mobile.

    • Hi Adrian,
      Yes, you can use your PAC Code to move the phone number over at any time! I’d definitely recommend testing out the BT Mobile SIM card for a few days before moving your phone number over. This would reduce any complication should you need to return the SIM card to BT for any reason.
      Hope this helps,

  • Charles Butterworth said:

    Hello my contract with bt mobile finished in a months time taken out a contract with sky have not told bt yet wish to take my bt number to sky can I do that will I have problems with bt

    Charles Butterworth transferred a phone number from BT Mobile to Sky Mobile.

    • Hi Charles,
      Many thanks for your comment. This won’t cause you any problems with BT, as you can decide to move your phone number over at any time. However, it’s worth noting that you’ll normally need to give 30 days notice to bring your contract to an end. BT are normally entitled to charge you for 30 days after you tell them you want to leave, so delaying the request of your PAC Code may cause you to pay a little bit extra here.
      Hope this helps,

  • Hiya,

    I am looking at getting a new contract with another provider as my current one is a little pants.

    I am wondering if I was to take a contract with BT now, and then in Dec I cancel my EE one and ask for my PAC could I still transfer it to my BT.



    Andy transferred a phone number from EE to BT Mobile.

    • Hi Andy,
      Yes, of course 🙂 You can sign up to BT Mobile now and you can transfer your phone number over to them whenever you like (so you could continue using EE until December, at which point you move the phone number over to BT Mobile).
      Hope this helps!

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