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

Step 1: Get a PAC Code from O2

If you’d like to move your phone number from O2 to iD Mobile, the first step is getting your Porting Authorisation Code (or PAC Code) from O2.

There are three ways to get a PAC Code from O2:

  1. Online: You can get a PAC Code from O2 by logging in to the My O2 website. Once you've logged in, go to My details > Thinking of switching from O2?.
  2. By Text Message: You can get an O2 PAC Code sent to you via SMS text message. Text PAC to 65075 to receive a PAC Code from O2.
  3. By Phone: You can get a PAC Code by calling O2. To do this, call them on:
    • For O2 Pay Monthly, dial 202 (or 0344 8090202 from any other phone)
    • For O2 Pay As You Go, dial 4445 (or 0344 8090222 from any other phone)
    You'll need to call during O2's opening hours (Monday-Friday 8am-9pm, Saturday 8am-8pm, Sunday 8am-6pm).

Here are some key things to know:

  • The PAC Code from O2 should consist of six numbers with TEL at the start (e.g. TEL 123 456).
  • 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 O2: it'll be closed automatically when your phone number is transferred to iD Mobile.

Still in contract with O2? If so, you may need to pay an early exit fee on your bill from O2. To find out how much this would be, text INFO to 87075.

Don’t want to keep your O2 phone number? You can switch to iD Mobile without taking your phone number with you. If you'd like to do this, get a STAC Code from O2 instead.

O2 STAC Code (Leave O2 Without Keeping Your Number)

If you’d like to leave O2 without keeping your phone number, you’ll need to request a STAC Code rather than a PAC Code. There are three ways to get a STAC Code from O2:

  1. Online: You can get a STAC Code from O2 by logging in to the My O2 website. After logging in, go to My details > Thinking of switching from O2?.
  2. By Text Message: You can get an O2 STAC Code sent to you via SMS text message. Text STAC to 75075 to receive a STAC Code from O2.
  3. By Phone: You can get a STAC Code by calling O2. Call them on:
    • For O2 Pay Monthly, dial 202 (or 0344 8090202 from any other phone)
    • For O2 Pay As You Go, dial 4445 (or 0344 8090222 from any other phone)
    You'll need to call during O2's opening hours (Monday-Friday 8am-9pm, Saturday 8am-8pm, Sunday 8am-6pm).

Once you’ve gotten your STAC Code from O2, the rest of the process for joining iD Mobile remains the same.

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

You should now order your new phone or SIM card using the iD Mobile website. Please select the type of tariff you're intending to move to:

If you're looking for a SIM card from iD Mobile, the following deals from £6/month are currently most popular:

NetworkMinutesTextsDataMonthly
Cost
iD MobileUnlimitedUnlimited4GB£6.00
1 month
iD MobileUnlimitedUnlimited10GB£7.00
12 months
iD MobileUnlimitedUnlimited30GB£10.00
12 months
iD MobileUnlimitedUnlimited50GB£15.00
12 months
iD MobileUnlimitedUnlimitedUnlimited£20.00
1 month

For a full list of available tariffs and the latest iD Mobile deals, please refer to this page on iD Mobile's website.

Alternatively, if you're getting your iD Mobile plan from a reseller, tap on their logo for more information:

iD Mobile 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 iD Mobile.

Step 3: Give the PAC Code to iD Mobile

Once your new phone or SIM card arrives from iD Mobile, switch it on and make sure everything's working properly. If, for whatever reason, you need to return or change the handset or SIM card, it's best to do this before transferring your phone number.

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

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.

If you have a STAC Code from O2 rather than a PAC Code, this can be provided to iD Mobile in the exact same way.

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

Remember:

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

Step 4: Phone Number Transferred (Next Working Day)

As long as you've submitted your PAC Code to iD Mobile before 6pm, your phone number transfer will normally be scheduled for the next working day (Monday to Friday only, excluding English bank holidays). After 6pm, you'll need to wait one extra working day for your number to be transferred.

On the day of the transfer, you'll momentarily lose coverage on both mobile networks. When this happens, restart your handset on iD Mobile. You should find that the iD Mobile 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 iD Mobile, your account on O2 will automatically be closed. You'll receive a final bill from O2 for any outstanding charges.

Get the Latest Deals from iD Mobile →

Any Other Questions?

In case of any problems during the transfer of your phone number, you should contact your new mobile network (iD Mobile) 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 the comments below from other visitors to this website.

← Full Article: "PAC Codes - How to transfer your mobile number when switching networks"

Your Comments 1,935 so far

We'd love to hear your comments on transferring a phone number from O2 to iD Mobile. The comments below are from people who've made the same transfer. You can add your own comments here.

To view all 1935 comments about transferring a phone number, please visit the main PAC Code article.

  • 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.

    • 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,
      Ken

  • Hi Ken, I wonder if you could tell me where I stand regarding the problem I’m having with porting my number over to iD.

    I got my pac code from O2 and used id’s online porting facility on July 1st to transfer on July 2nd, my O2 sim went dead on the 2nd but iD where having network problems so I couldn’t check for 4 days, when I find it didn’t go through?

    I have contacted iD CS numerous times to resolve this, but they say next day, three to five days, I am getting nowhere with them, any ideas?

    Kind regards,

    Gerry.

    • Hi Gerry,
      Thanks for your comment. It’s iD Mobile that’s now responsible for the provision of your service (your phone number has already left the O2 network). Unfortunately, this means you need to further liaise with iD Mobile to resolve the problem. I know this response won’t provide you with much comfort (it’s just that iD Mobile are the only people who are actually able to see your account). If you want to escalate the issue, I recommend you make a formal complaint in writing to iD Mobile. This should hopefully help you in getting the situation resolved as quickly as possible.
      Best of luck,
      Ken

      • Hi Ken, Thanks for your prompt reply and links.

        I am waiting on them getting back to me by this evening.

        But if they have lost my number ( I don’t understand why it hasn’t gone over ? ), do I have any legal entitlement?

        Kind regards,

        Gerry.

        • Hi Gerry,
          I’m afraid I can’t advise on legal entitlements with regards to a phone number (there isn’t a set rule or compensation scheme for things such as this). You could probably check directly with the Ombudsman or Ofcom but I’m also not totally sure if they can give you an answer. Your best bet would probably be to complain directly to iD Mobile – if necessary, you can escalate the issue upwards from there. Really sorry I can’t give you any more detailed advice than that! 🙁
          Ken

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