Whether you're joining T-Mobile or leaving for a different network, it's a straightforward process to keep your old phone number.

T-Mobile PAC CodeIf you're leaving T-Mobile and joining another network or if you're leaving another network in order to join T-Mobile, 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 T-Mobile For Another Network

T-Mobile

If you're leaving T-Mobile and joining another network, you can take your phone number with you.

Start by asking T-Mobile to issue you with a PAC Code. You can get a PAC Code from T-Mobile by calling 150 on your T-Mobile handset. Alternatively, dial 020 7362 0200 from any other phone.

You can request a PAC Code over the phone at any time during T-Mobile'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.

It's always free to get a PAC Code from T-Mobile (it's your legal entitlement). After getting your T-Mobile 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 T-Mobile PAC Code

Your new network provider:

Joining T-Mobile From Another Network

T-Mobile

If you're joining T-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 T-Mobile.

After getting the PAC Code, you should order your new handset or SIM card directly from T-Mobile's website. For more information, please select the type of tariff you're wanting to move to:

For a full list of the latest T-Mobile deals, please see this page on T-Mobile's website.

Get the Latest Deals from T-Mobile →

Once Your New Phone Arrives...

Once your new phone or SIM card arrives from T-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 T-Mobile's online form. Alternatively, you can give the PAC Code to T-Mobile by calling 150 on your T-Mobile handset. You can also call 020 7362 0200 from any other phone.

Providing your PAC Code to T-Mobile
The PAC Code should be submitted through a form on T-Mobile's website.

If your PAC Code is provided before 5.30pm, 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 5.30pm cut-off, you'll need to wait one extra working day for your number to be transferred.

Upgrading Your Plan On T-Mobile

T-Mobile
T-Mobile

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

Your Comments 1,227 so far

We would love to hear your comments: either about using a T-Mobile PAC Code or transferring your phone number from another network to T-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 1227 comments about transferring a phone number, please see the main PAC Codes article.

  • Hi,

    I recently changed my payg EE (T-Mobile) number over to my new Vodafone contract and the actual change went smoothly.

    I still however receive text messages from EE. I contacted EE to see how to stop these messages and was told the only way would be to reply with one of the STOP etc codes at the end of their messages. Surely though, these texts would cost me extra (outside of my Vodafone contract plan) to send to EE as they’re not Vodafone numbers. Is this correct?

    Donna transferred a phone number from T-Mobile to Vodafone.

  • I am with TMobile/ EE on a PAYG
    I wanted to change to Tesco mobile. There is about £80 credit in my account will this money come with me when I get my pac code and change. I had requestd my money back but got refused thank you

    Noeleen transferred a phone number from T-Mobile to Tesco Mobile.

  • Hi Ken,
    Apologies if this is stupid question or it has been asked before: my daughter has a Nokia phone on T-mobile monthly bundle – we want to get her a SIM Free Moto G and also transfer to a GiffGaff SIM so we can use their goodybags, which seem better.

    I can see that it is straightforward to get a PAC from T-Mobile to do this but my question is: what happens if we buy the Moto G from Three – which is cheapest route according to your report – do we have to transfer from T-Mobile to Three and then from Three to GiffGaff?

    If this is the case, would it be better to buy the phone SIM Free from somewhere else online?

    Many thanks,
    Alex

    Alex transferred a phone number from T-Mobile to giffgaff.

    • Hi Alex,
      Thanks for your comment. When purchasing the Moto G from Three, it’s provided to you on an unlocked basis. Hence, if you like, you can immediately use a SIM card from giffgaff inside the handset (there’s no need to actually use the Three SIM card). This way, you’re able to transfer your phone number directly from T-Mobile to giffgaff. If you’d like to use the SIM card from Three, then you can of course do a transfer from T-Mobile –> Three followed by another transfer from Three –> giffgaff.
      Hope this helps,
      Ken

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