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

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

iD Mobile

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

Start by asking iD to issue you with a PAC Code. You can get a PAC Code from iD Mobile by calling 7777 on your iD Mobile handset. Alternatively, dial 0333 003 7777 from any other phone.

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

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

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

Your new network provider:

Joining iD From Another Network

iD Mobile

If you're joining iD 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 iD Mobile.

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

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

Get the Latest Deals from iD Mobile →

Once Your New Phone Arrives...

Once your new phone or SIM card arrives from iD 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 iD Mobile's online form. Alternatively, you can give the PAC Code to iD Mobile by calling 7777 on your iD Mobile handset. You can also call 0333 003 7777 from any other phone.

Providing your PAC Code to iD Mobile
The PAC Code should be submitted through a form on iD Mobile's website.

If your PAC Code is provided before 6.00pm, 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 6.00pm cut-off, you'll need to wait one extra working day for your number to be transferred.

Upgrading Your Plan On iD

iD Mobile
iD Mobile

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

Your Comments 1,418 so far

We would love to hear your comments: either about using an iD Mobile PAC Code or transferring your phone number from another network to iD 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 1418 comments about transferring a phone number, please see the main PAC Codes article.

  • I have transferred to id from ee. I have today received a text saying my old number has transferred to id, but calls to that number are still going to my old phone. Please advise

    alan transferred a phone number from EE to iD Mobile.

    • Hi Alan,
      Many thanks for your comment. Is this problem now resolved? Sometimes, you may receive your confirmation message before the switch is complete, but typically this will be resolved by end of day (so at least by 6pm).

  • I have changed form 02 to id mobile I have entered my pac code on line to keep my number I did it Monday about 9.30 how long before my number changes over.

    Keith transferred a phone number from O2 to iD Mobile.

    • Hi Keith,
      The timeline for a normal phone number transfer is described in the table here. As you submitted your PAC Code to iD Mobile on a Monday before the daily cut-off time, I’d typically expect your phone number transfer to take place on Tuesday. If it hasn’t completed by the end of the day, I’d recommend giving iD Mobile Customer Services a call to check up on this.
      Hope this helps,

  • Hey,
    I was on Pay + Go with LycaMobile but I went to Carphone Warehouse on Thursday and saw iD contract was cheap, and I choose iD. But I want to keep the same number from my lyca to iD. And the woman that worked there say that it would be easier to change my number online or on the app. So I waited for lyca to send me a message of the PAC code in the evening but it didn’t send. However, on Friday morning when I woke up, I saw the PAC code message has been delivered, so I made an account on the iD app and changed my number and Hopi that the number will change within that day. But they didn’t. I contacted the iD department on twitter hoping that they will help me and they said that number will change on Monday because they don’t work on the weekend. I was a bit angry hoping that I can go out and use my contract whenever I need it with my number. And today is Monday, the number hasn’t changed, so what do I do? (Ps. I’ve contacted iD on twitter but they are not answering my questions, wondering if you could help me)

    From Faith

    Faith transferred a phone number from Lycamobile to iD Mobile.

    • Hi Faith,
      Thanks for your comment. There’s more information here on the expected timeframes for a phone number transfer. In short: if you make your request before the cut-off on Friday, your phone number will transfer some time on Monday. Today, I’d keep both of the SIM cards with you (it’s likely you’ll lose coverage at some point on Lycamobile, after which your iD Mobile SIM card will take over that phone number).
      Hope this helps!

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